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Kertassoalaninimengandungi29halamanbercetak[Lihathalamansebelah]
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SULIT 2 4551/1
1. Diagram1showsanorganelle.Rajah1menunjukkansatuorganel.
Diagram1Rajah1
WhichofthefollowingcellpossesstheorganelleinDiagram1?Antarasel-selberikut,yangmanakahmengandungiorganeldalamRajah1?A Guardcell
SelpengawalB Musclecell
SelototC Epidermalcell
SelepidermisD Cheek cell
Selpipi2. Diagram2showsaunicellularorganism.
Rajah2menunjukkansatuorganismaunisel
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Rajah2Whichofthefollowingprocessfacilitatesthemovementofwaterintothecell?
Antaraprosesberikut,yangmanakahmempercepatkanpergerakanairkedalamseltersebut?
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SULIT 3 4551/1
A OsmosisOsmosis
I II
HydrophilicheadKepalahidrofilik HydophobictailEkorhidrofobikHydophobichead
Kepalahidrofobik HydrophilictailEkorhidrofilikPolarheadKepalaberkutub PolartailEkorberkutub
Non-polarheadKepalatidakberkutub Non-polartailEkortidakberkutub
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D
C
B
A
ResapanRingkasD FacillitatedDiffusion
ResapanRingkas
3. Diagram3showspartofaplasmamembrane.Rajah3menunjukkansebahagiandaripadamembranplasma.
Diagram3Rajah3
WhatarethepartslabeledIandII?ApakahbahagianberlabelIdanII?
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SULIT 5 4551/1
WhatarethefoodclassesofPandQ?ApakahkelasmakananbagimolekulPdanQ?
A
B
C
D
6. Whichtypeofcarbohydrateisfoundinabundanceinlivercells?Apakahjeniskarbohidratyangbanyakdijumpaidalamselhati?A Starch
Kanji
B SucroseSukrosaC Glycogen
Glikogen
D GlucoseGlukosa
7. Whichofthefollowingenzymeissynthesisedinpancrease?Yangmanakahantaraenzimberikutdisintesisdipankreas?A Sucrase
SukraseB Pepsin
Pepsin
P Q
ProteinProtein
LipidLipid
CarbohydrateKarbohidrat
ProteinProtein
LipidLipid
CarbohydrateKarbohidrat
ProteinProtein
CarbohydrateKarbohidrat
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8 Whichofthefollowingcelldoesnotcarryoutmitosis?Yangmanakahantaraselberikuttidakmenjalankanprosesmitosis?A Skincells
Sel-selkulitB Hair cells
Sel-selrambutC Finger nailcells
Sel-selkukuD Redbloodcells
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SULIT 6 4551/1
Seldarahmerah9 Thefollowingstatementreferstoaprocessindigestion.
Pernyataanberikutmerujukpadasatuprosesdalampencernaan.
Aprocessofutilizationofdigestednutrienttoformcomplexcompounds.Prosespenggunaannutrienuntukmembentuksebatiankompleks.
Whatistheprocess?Apakahprosestersebut?A Assimilation
Asimilasi
B AbsorptionPenyerapan
C DeaminationDeaminasi
D DefaecationPenyahtinjaan
10 Diagram6showsaruminantdigestivesystem.
WhichofthepartP,Q,RandSisthetruestomachoftheruminant?Rajah6menunjukkansistempencernaanhaiwanruminan.YangmanakahantarabahagianyangberlabelP,Q,RandSmerupakanper
ut
sebenarhaiwanruminan?
P
R
Q S
Diagram6Rajah6
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SULIT 7 4551/1
11 Diagram7showsthehumandigestivesystem.Rajah7menunjukkansistempencernaanmanusia.
Diagram7Rajah7
WhichofthepartlabelledA,B,CandDisthesitewheredeaminationtakesplace?YangmanakahantarabahagianberlabelA,B,CdanDmerupakantem
pat
berlakunyadeaminasi?12 Diagram8showsthestructureforgaseousexchangeinhumans.
Rajah8menunjukkanstrukturuntukpertukarangasmanusia.
Diagram8Rajah8
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SentiasalembabII Thinandpermeable
NipisdantelapIII Hasalargesurfacearea
MempunyailuaspermukanyangbesarIV Completewithmainbloodvessel
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SULIT 8 4551/1
LengkapdengansalurdarahutamaA I d III l
P Q R
SkinKulit
TracheolesTrakeol
AlveolusAlveolus
AlveolusAlveolus
SkinKulit
TracheolesTrakeol
AlveolusAlveolus
TracheolesTrakeol
SkinKulit
TracheolesTrakeol
AlveolusAlveolus
SkinKulit
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D
C
B
A
C IIIandIVonlyIIIdanIVsahaja
D I,IIandIIIonlyI,II,danIIIsahaja
13 Diagram9showsthreedifferenttypesoforganisms.Rajah9menunjukkantigajenisorganismayangberbeza.
P Q R
Diagram9Rajah9
Whichofthefollowingshowsthecorrectrespiratorysurfaceoftheorganisms?Manakahantaraberikutmenunjukkanpermukaanpernafasanyangbetuluntuk
organismatersebut?
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Zone1Zon1 Zone2Zon2 Zone3Zon3
Rhizophorasp Bruguierasp AvicenniaspandSonneratiasp
AvicenniaspdanSonneratiasp
Bruguierasp AvicenniaspandSonneratiasp
AvicenniaspdanSonneratiasp
Rhizophorasp
AvicenniaspandSonneratiaspAvicenniaspdanSonneratiasp
Rhizophorasp Bruguierasp
AvicenniaspandSonneratiasp
AvicenniaspdanSonneratiasp
Bruguierasp Rhizophorasp
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Rajah10menunjukkanprofilhutanpayabakau.
HightideAirpasang
LowtideAirsurut
Muddyshorewithoutplant
Zone1Zon1 Zone2Zon2 Zone3Zon3
Tebinglumpurtanpatumbuh-tumbuhan
Diagram10Rajah10
Whatarethedominantspeciesfoundineachzone?Apakahspesiesdominanyangterdapatdisetiapzonini?
A
B
C
D
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Numberofanimals
Bilangianhaiwan
SULIT 10 4551/1
15 Diagram11showsagraphofthechangesinthepopulationofowlandratinacommunity.
Rajah11menunjukkansatugrafperubahanpopulasiburunghantudantikusdalamsatukomuniti.
Owl/BurunghantuRat/Tikus
Time/MasaDiagram11Rajah11
Whatisthetypeofinteractionisshownbythegraph?Apakahjenisinteraksiyangditunjukkanolehgraftersebut?
A Commensal-hostrelationshipPerhubungankomensal-perumahB Parasite-hostrelationship
Perhubunganparasit-perumahC Prey-predator-relationship
Perhubunganmangsa-pemangsaD Epiphyte-epizoitrelationship
Perhubunganepifit-epizoit
16 Whichofthefollowingisthemaincauseofacidrain?AntarayangberikutyangmanakahpuncautamahujanasidA Carbondioxide
KarbondioksidaB Sulphur dioxide
SulfurdioksidaC Carbonmonoxide
KarbonmonoksidaD ChlorofluorocarbonsKloroflorokarbon
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SULIT 11 4551/1
17 Diagram12showsacrosssectionofayoungdicotyledonrootconsistingofafewmaintissues.
Rajah12menunjukkankeratanrentasakarmudapokokdikotiledonyangterdiridaripadabeberapatisuutama.
M
Diagram12Rajah12
WhatisM?ApakahM?A Phloem
Floem
B XylemXilem
C CortexKorteks
D CambiumKambium
18 Whichofthefollowingsubstancescausesprothrombintochangetothrombin?
Yangmanakahantarabahanberikutmenyebabkanprotrombinbertukarkepadatrombin?A VitaminK
VitaminKB Thrombin
Trombin
C CalciumionIonkalsium
D ThrombokinaseTrombokinase
19 Whichtypeofimmunityisobtainedbyinjectingantiserumintothebody?Apakahjeniskeimunanyangakandiperolehdenganmenyuntikantiserumkedalambadan?
A ArtificiallyacquiredpassiveimmunityKeimunanpasifbuatan
B NaturallyacquiredpassiveimmunityKeimunanpasifsemulajadi
C ArtificiallyacquiredactiveimmunityKeimunanaktifbuatan
D NaturallyacquiredactiveimmunityKeimunanaktifsemulajadi
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SULIT 12 4551/1
20 Whatarethefunctionsofthehumanskeleton?Apakahfungsi-fungsirangkamanusia?
I SupportthebodyMenyokongbadan
II For locomotionUntukpergerakan
III ProducesbloodcellsMenghasilkanseldarah
IV ProtectstheinternalorganssuchasheartandlungsMelindungiorgandalamansepertijantungdanpeparu.
A IandIIonly
B IIIandIVonlyC I,IIandIVonlyD I,II,IIIandIV
21 Diagram13showsahumanlumbarvertebrae.Rajah13menunjukkansatuvertebralumbarmanusia.
Diagram13Rajah13
WhatisthefunctionofXandY?ApakahfungsiXdanY?A Protectionforspinalcord
PerlindunganbagisaraftunjangB Surfacesformuscleattachment
PermukaanuntukpelekatanototC SurfacesforvertebraljointsPermukaanuntuksendivertebraD Surfaces for rib articulation
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SULIT 13 4551/1
22 Diagram14showsthegrowthcurveofaninsect.Rajah14menunjukkanlengkungpertumbuhanseekorserangga.
Bodylength(cm)Panjangbadan(sm)
XTime(days)
Masa(hari)
Diagram14Rajah14
WhatisstageX?ApakahperingkatXA Ecdysis
Ekdisis
B AdultDewasa
C NymphNimfa
D Instar Instar
23 Thefollowingstatementisaboutamethodofcontraceptioninfemales.Pernyataanberikutadalahtentangsatukaedahpencegahankehamilanpadawanita.
Aplastic-coatedcoppercoil
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Preventsimplantationoftheembryointheuterinewall
Menghalangpenempelanembriopadadindinguterus
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SULIT 14 4551/1
Whatisthemethodused?
HormoneJHormonJ HormoneKHormonKOestrogenEstrogen
ProgesteroneProgesteron
ProgesteroneProgesteron
OestrogenEstrogen
ProgesteroneProgesteron GonadotrophineReleasingHormone(GnRH)HormonPerembesGonadotrof
(GnRH)
GonadotrophineReleasingHormone(GnRH)
HormonPerembesGonadotrof(GnRH)
ProgesteroneProgesteron
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B DiaphragmDiafragma
C IntrauterineDevice(IUD)Alatkontraseptifdalamrahim(IUD)
D FemalecondomKondomwanita
24 Thefollowingstatementisaboutthehormonesthatregulatethemenstrualcycle.
Pernyataanberikutadalahtentanghormon-hormonyangmengawalaturkitarhaid.
HormoneJStimulatestheanteriorpituitarytosecreteLHandFSH
HormonJMerangsangpituitaryanterioruntukmerembesLHdanFSH HormoneKAtlowlevel,causesthebreakdownofendometriumwalland
menstruationHormonKPadaparasyangrendah,menyebabkankeruntuhandindingendometriumdankedatanganhaid
WhatarehormonesJandK?ApakahhormonJdanK?
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D
C
B
A
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SULIT 15 4551/1
W X Y ZFoodstorage
Simpananmakanan TransportPengangkutan SupportSokongan TransportPengangkutanFoodstorage
Simpananmakanan TransportPengangkutan TransportPengangkutan SupportSokonganSupport
Sokongan
TransportPengangkutan
TransportPengangkutan
FoodstorageSimpanan
makanan
TransportPengangkutan
SupportSokongan
FoodstorageSimpanan
makanan
FoodstorageSimpanan
makanan
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D
C
B
A
MendelsFirstLawofInheritanceisalsoknownasLawofSegregation.HukumMendelPertamajugadikenalisebagaiHukumPengasinganBebas.
Basedonthestatement,whichstageofcelldivisionisinvolvedinthesegregationofalleles?Apakahperingkatpembahagianselyangterlibatdalampengasinganalel
A ProphaseIProfasaI
B MetaphasaIMetafasaI
C AnaphaseIAnafasaI
D TelophaseITelofasaI
26 Diagram15showsfourdifferenttypesofplanttissues.Rajah15menunjukkanempatjenistisutumbuhanyangberbeza.
W X Y Z
Diagram15Rajah15
Whatarethefunctionsofthetissues?Apakahfungsitisu-tisutersebut?
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SULIT 16 4551/1
27 Thefollowinginformationreferstoatypeoftissue.Berikutialahmaklumatmengenaisejenistisu.
Specialised to form hair-liked cells called cilia
Conditionofredbloodcell
Keadaanseldarahmerah
SolutionLarutan SaltsolutionMLarutangaramM SaltsolutionNLarutangaramN
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Merembeskanmucus
Whichofthefollowingorgansismadeupofthetissueabove?Yangmanakahantaraorgandibawahmengandungitisutersebut?A Heart
Jantung
B LungsPeparu
C SmallintestineUsuskecil
D TracheaTrakea
28 Diagram16showstheconditionofredbloodcellsampleswhichhavebeenplacedindifferentconcentrationofsaltsolutionsMandN.
Rajah16menunjukkankeadaansampelseldarahmerahyangtelahdiletakkandidalamkepekatanlarutangaramyangberbezaMdanN.
Diagram16Rajah16
WhatarethetypesofsolutionMandNcomparedtotheredbloodcells?ApakahjenislarutanMdanNberbandingdenganseldarahmerahtersebut?
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A
B
C
D
SULIT 17 4551/1
29 Thegraphshowstheresultofanexperimenttodeterminetheconcentrationofthecellsapofpotatotissues.Grafmenunjukkankeputusansatueksperimenuntukmenentukankepekatansap selubikentang.
SolutionMLarutanM SolutionNLarutanNHypotonicHipotonik
HypertonicHipertonik
IsotonicIsotonik
HypotonicHipotonik
HypertonicHipertonik
IsotonicIsotonik
HypertonicHipertonik
HypotonicHipotonik
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cellsapofpotatotissues?YangmanakahantaratitikA,B,CatauDmerupakankepekatanlarutansukros
a
yanghipertonikterhadapsapseltisuubikentang?30 Diagram17showsaprocessinastageofcelldivisioninaplant.
Rajah17menunjukkansatuprosesdalamperingkatpembahagianselpadatumbuhan.
Diagram17Rajah17
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SULIT 18 4551/1
Whichofthefollowingpartoftheplantdoesthisprocessoccur?Yangmanakahantarabahagiantumbuhanberikutprosesiniberlaku?A Anther
Anter
B LateralbudTunassisi
C CambiumKambium
D RoottipHujungakar
31 Whichstatementistrueaboutmeiosis?Kenyataanyangmanakahbenartentangmeiosis?A DNAreplicationoccurstwiceinmeiosis
ReplikasiDNAberlakuduakalidalammeiosisB Uncontrolledmeiosiscancauseadiseasenamedcancer
MeiosistidakterkawalbolehmenyebabkanpenyakitdinamakankanserC ThechromosomalbehaviourinmeiosisIisthesameasinmitosis
PerlakuankromosomdalammeiosisIsamasepertidalammitosisD SynapsisandcrossingovertakeplaceonlyinprophaseI
SinapsisdanpindahsilanghanyaberlakudalamprofasaI32 Diagram18showsthevariousstagesofmitosis.
Rajah18menunjukkanpelbagaiperingkatmitosis.
P Q R S
Diagram18Rajah18
Whichofthefollowingshowsthecorrectsequenceofthestages?Yang manakah antara berikut menunjukkan susunan peringkat yang betul?
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D PSQR
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SULIT 19 4551/1
AerobicRespirationRespirasiaerobik
AnaerobicRespirationRespirasianaerobikCarbondioxideandwater
Karbondioksidadanair EthanolEtanolCarbondioxideandwaterKarbondioksidadanair Lacticacidsidlaktik
Lacticacidsidlaktik EthanolEtanol
Lacticacidsidlaktik CarbondioxideandwaterKarbondioksidadanair
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P
Q
R
S
Table1Jadual1
Whicharethecorrectdifferences?Yangmanakahperbezaanyangbetul?A PandQonly
PdanQsahajaB PandRonly
PdanRsahajaC QandRonly
QdanRsahajaD QandSonly
QdanSsahaja
34 Whichofthefollowingareproductsofaerobicandanaerobicrespirationinthemusclecells?Antarayangberikutyangmanakahhasilrespirasiaerobikdananaerobikdidalamselotot?
A
B
C
D
[Lihat halaman sebelah]
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SULIT 20 4551/1
35 Whatisthemaincauseofeutrophication?Apakahpuncautamaeutrofikasi?
A BurningoffossilfuelsPembakaranbahanapifosil
B LeachingofexcessfertilizersLarutresaplebihanbajatakorganik
C ThinningofozonelayerPenipisanlapisamozon
D GreenhouseeffectKesanrumahhijau
36. Diagram19showsaconditionofstomata.Rajah19menunjukkansuatukeadaanstomata.
GuardcellsSelpengawal
Diagram19Rajah19
Whichofthefollowingmaycausethecondition?Yangmanakahantaraberikutmenyebabkankeadaantersebut?A Highlightintensity
KeamatancahayayangtinggiB Water enterstheguardcells
AirmasukkedalamselpengawalC Potassiumionleavestheguardcells
IonkaliummeninggalkanselpengawalD Highconcentrationofglucoseintheguardcells
Kepekatanglukosayangtinggididalamselpengawal
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SULIT 21 4551/1
37. Diagram20showsanelbowjoint.WhichofthepartslabeledA,B,CorDistoughandelastictissue?
Rajah20menunjukkansatusendisiku.YangmanakahantarabahagianberlabelA,B,CdanDialahtisuyangkuatdankenyal?
Diagram20Rajah2038
Ahaemodialysismachineisusedtoeliminateureafromthebloodofapersonwithdamagedkidney.
Mesinhaemodialisisdigunakanuntukmenyingkirkanureadaripadadarahseseorangyangmengalamikerosakanginjal.
Whichofthefollowingconditionenablestheprocess?Yangmanakahantarakeadaanberikutmembolehkanprosestersebutberlaku?A Concentrationofureainthebloodandinthedialysisfluidisthesame
Kepekatanureadidalamdarahadalahsamadengankepekatanureadidalamcecairdialysis
B Concentrationofwatermoleculesinthedialysisfluidishigherthanintheblood
Kepekatanmolekul
air
dalam
cecair
dialisis
lebih
tinggi
daripada
dalam
darah.
C Concentration of urea in the dialysis fluid is higher than in the blood
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cecairdialisis.
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SULIT 22 4551/1
39 Whichofthefollowingisthesimilaritybetweenthenervoussystemandthe
endocrinesystem?Yangmanakahantaraberikutmerupakanpersamaanantarasystemsarafdansistemendokrin?
A BothworkatthesamespeedKedua-duanyaberkerjapadakelajuanyangsama
B BothcoordinateresponsestowardsstimuliKedua-duanyamenyelarasgerakbalasterhadaprangsangan
C BothusebloodasthemediumoftransmissionKedua-duanyamenggunakandarahsebagaimediumpemindahan
D BothsendsignalstoonespecificeffectorKedua-duanyamenghantarisyaratkesatuefektoryangspesifik
40 Diagram21showsachromosomalmutation.
Rajah21menunjukkansatumutasikromosom.D
E
H
G
F
Diagram21Rajah21
Whichofthefollowingisthetypeofchangeinthechromosomalstructurethatcausesthemutation?Yangmanakahantarajenisperubahanpadastrukturkromosomyangberikutmenyebabkanperubahanini?A Deletion
Pelenyapan
B DuplicationPenggandaan
C Inversion
PenyongsanganD Translocation
Translokasi
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SULIT 23 4551/1
41 Diagram22showsanexperimenttoinvestigatetherateofreactionofenzymepepsinonalbumen.
Rajah22menunjukkansatueksperimenuntukmengkajikadartindakbalasenzimpepsinkeatasalbumen.
PepsinsolutionLarutanpepsin
AlbumenAlbumen
Diagram22Rajah22
Thepepsintook15minutestodigest0.25gofalbumenat200C.
Howmuchalbumenwillbedigestedin15minutesat30C?Pepsinmengambilmasaselama15minituntukmencernakan0.25galbumenpada200C.
Berapabanyakalbumenakandicernakandalammasa15minitpadasuhu30C?A 0.0gB 0.15gC 0.25gD 0.50g
42 Table2showsthemenutakenbya10-year-oldboy.Jadual2menunjukkanmenuyangdiambilolehseorangkanak-kanaklelakiberusia10tahun.
Breakfast:
Sarapan:
WhitebreadRotiputih
ButterMentega
FullcreammilkSusupenuhkrim
Lunch:
Makan tengah hari:Rice
Nasi
SteamedfishIkankukusPlainwaterAirkosong
Table 2
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Yangmanakahantaramasalahkesihatanberikutakanberlakusekiranyadiaterusmengambilmenuiniuntukjangkamasayangpanjang?
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SULIT 24 4551/1
A ObesityObesiti
B Gastritis
GastritisC Scurvy
Scurvy
D KwashiokorKwashiokor
43 Anexperimentwassetuptostudyrespirationinorganisms.Diagram23showsthesetupoftheexperiment.Satueksperimentelahdisediakanuntukmengkajirespirasidalamorganism.
Rajah23menunjukkanpenyediaaneksperimentersebut.AirgoesinUdaramasuk
GerminatingseedsBijibenihyangbercambah
TofilterpumpKepampenapis
PotasiumhydroxidesolutionLarutannatriumhidroksida
LimewaterJAirkapurJ
AluminiumfoilPembalutaluminium
LimewaterKAirkapurK
Diagram23Rajah23
Whichofthefollowingwillbeobservedafteronehour?Antaraberikutyangmanakahakandiperhatikanselepassatujam?A ThelimewaterKturnscloudybecausecarbondioxideisreleasedduringseed
germinationAirkapurKmenjadikeruhkeranakarbondioksidadibebaskansemasapercambahanbijibenih
B ThelimewaterKturnscloudybecausecarbondioxideisneededduring
photosynthesis.AirkapurKmenjadikeruhkeranakarbondioksidadiperlukansemasafotosintesis
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benih
D ThelimewaterJremainsclearbecauseoxygenisreleasedduring
photosynthesis.AirkapurJkekaljernihkeranaoksigendibebaskansemasaprosesfotosintesis
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SULIT 25 4551/1
44 Table3showstheresultofanexperimenttostudythepopulationofgrasshoppersinanarea.
Jadual3menunjukkankeputusansatueksperimenuntukmengkajipopulasibelalangdisatukawasan.
RiverSungai
Timetakenforthemethylenebluesolutiontodecolouriseasayangdiambiluntuklarutanmetilenabirumeluntur
J 1.5hour/jamK 3.0hours/jamL 3.5hours/jamM 5hours/jam
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Table3Jadual3
Whatistheestimatedpopulationsizeofthegrasshoppersinthearea?Apakahanggaransaizpopulasibelalangdikawasantersebut?A 7B 180C 261
D 580
45 Four samplesofwaterweretakenfromriverJ,K,L,andMandtreatedwithmethylenebluesolutiontodeterminethelevelofpollutionineachriver.TheresultswererecordedinTable4.
EmpatsampelairtelahdiambildarisungaiJ,K,L,andMdandirawatdenganlarutanmetilenabiruuntukmenentukantahappencemaransetiapsungai.
KeputusandirekodkandalamJadual4.
Table4Jadual4
Basedontheresult,whichriverwillhavethehighestpopulationoffish?Berdasarkankeputusan,sungaimanakahakanmempunyaipopulasiikanyangpalingtinggi?
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Hak
Cipta
JPNJ SULIT
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SULIT 26 4551/1
A JB KC LD M
46 Diagram24showstheset-upoftheapparatustoinvestigatetherateoftranspirationinaplantusingaphotometer.TheobservationisrecordedinTable5.
Rajah24menunjukkansusunanradasuntukmenyiasatkadartranspirasidalam
Time/Minuteasa/minit 0 5
Positionofairbubble/cmKedudukangelembungudara/cm 0 3
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Table5
PlantshootPucuktumbuhan
RulerPembaris Airbubble
Diagram24Rajah24
Gelembungudara
Jadual5Whatistherateoftranspirationoftheplant?
Apakahkadartranspirasitumbuhanitu?A 0.3cmminute-1
0.3cmminit-1
B 3.0cmminute-1
3.0minit-1C 0.6cmminit-1
0.6minit-1D 6.0cmrninit-1
6.0minit-1
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SULIT 27 4551/1
47 Diagram25showsmusclesinthehindlegofagrasshopper.Rajah25menunjukkanototpadakakibelakangseekorbelalang.
J
K
LDiagram25
Rajah25WhathappenwhenthestructureJisbroken?
ApakahyangberlakujikastrukturJcedera?I Kcannotpulledtowardsthebody
KtidakbolehditarikkearahbadanII Kcannotpropelsthegrasshopperforwardsandupwardsintotheair
KtidakbolehmenolakbelalangkehadapandankeudaraIII LcannotcontractandcausesKcannotbefoldedintoaZshape
LtidakbolehmengecutdanmenyebabkanKtidakbolehdilipatkebentukZIV KcannotbestraightenedKtidakbolehmenjadilurus
A IandIIonlyIdanIIsahaja.
B IIandIIIonlyIIdanIIIsahaja.
C IIandIVonlyIIdanIVsahaja.
D IIIandIVonlyIIIdanIVsahaja.
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SULIT 28 4551/1
48.Amedicalcheck-upshowsthatapatientspancreasisdamagedandhastoberemoved.
Pemeriksaanperubatanmenunjukkanpankreasseorangpesakitrosakdanperludibuang
Whichofthefollowingshouldbedonebythepatienttomaintainanormalbloodsugarlevel?
Antaraberikut,manakahyangperludilakukanolehpesakitituuntukmengekalkanarasguladarahyangnormal?A Takingglucoseinjections
MengambilsuntikanglukosaB Takingabalanceddiet
MengamalkanpengambilangiziyangseimbangC Takinginsulinandglucagoninjections
MengambilsuntikanhormoninsulindanglukagonD Reduceintakeofhighcaloryfood
Mengurangkanpengambilanmakananberkaloritinggi
49 ThegenotypeofapeaplantisRRYy.Whichofthefollowingisthepossiblegameteproducedbythispeaplant?GenotipsatupokokpeaadalahRRYy.
Antaraberikut,yangmanakahmerupakangametyangmungkindihasilkanolehpokokkacang
pea
ini?
A rYB YyC RYD RR
50 AmanwithbloodgroupABmarriedawifewithbloodgroupO.WhatisthepercentageofpossibilityforthecouplestohaveachildwithbloodgroupAB?
SeoranglelakimempunyaikumpulandarahABberkahwindenganseorangisteriyangberkumpulandarahO.Apakahperatuskebarangkalianuntukpasangansuami-isteriinimempunyaiseoranganakyangberkumpulandarahAB?A 0%B 25%C 50%D 100%
ENDQUESTIONPAPERKERTASSOALANTAMAT
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SULIT 29 4551/1
INFORMATIONFORCANDIDATESMAKLUMATUNTUKCALON
1.Thisquestionpaperconsistsof50questions.Kertassoalaninimengandungi50soalan.2.Answerallquestions.
Jawabsemuasoalan.3.Eachquestionisfollowedbyfouralternativeanswers,A,B,CandD.Foreachquestion,
chooseoneansweronly.Blackenyouranswerontheobjectiveanswersheetprovided.Tiap-tiapsoalandiikutiolehempatpilihanjawapan,A,B,CdanD.Bagisetiapsoalan,
pilihsatujawapansahaja.Hitamjawapanandapadakertasjawapanobjektifyang
disediakan.
4.Ifyouwish tochangeyouranswer,erasetheblackenedmarkthatyouhavemade.Thenblackenthenewanswer.Jikaandahendakmenukarjawapan,padamkantandayangtelahdibuat.Kemudia
n
hitamkanjawapanyangbaru.
5.Thediagramsinthequestionsprovidedarenotdrawntoscaleunlessstated.Rajahyangmengiringisoalantidakdilukismengikutskalakecualidinyatakan.6.Youmayuseanon-programmablescientificcalculator.
Andadibenarkanmenggunakankalkulatorsaintifikyangtidakbolehdiprogram.
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SULIT 4551/2
4551/2
Biologi
Kertas2September
2011
2jam
UntukkegunaanpemeriksaBahagian Soalan Markah
Penuh
Markah
diperoleh
A 1 122 123 124 125 12
B 6 207 208 20
9 20
Jumlah
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1. Tulisnamapenuh,kelas,nomborkadpengenalan dan angka giliran anda
2. Kertas soalan ini adalah dalam3. Soalan dalam bahasa Inggeris
mendahuluisoalanyangsepadandalam4. Calondibenarkanmenjawabkeseluruhan
atausebahagiansoalanandasamaadadalam bahasa Inggeris atau bahasa
5. Calondikehendakimembacamaklumatdi
Nama: Kelas:
NO.KADPENGENALAN- -
ANGKAGILIRAN
JABATAN PELAJARAN NEGERI JOHOR
PEPERIKSAANPERCUBAANSPM2011 4551/2BIOLOGI
Kertas2September20112jam Duajamtigapuluhminit
JANGANBUKAKERTASSOALANINISEHINGGADIBERITAHU
padaruangyangdisediakan.
dwibahasa.
bahasaMelayu.
Melayu.
halamanbelakangkertassoalanini.
Kertassoalaninimengandungi24halamanbercetak
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SULIT 2 4551/2
For
Examiners
Use
SectionABahagianA
[60marks][60markah]
AnswerallquestionsinthissectionJawabsemuasoalandalambahagianini
1Diagram1showstheprocessofsynthesisandsecretionofextracellularenzymesinacell.Rajah1menunjukkanprosessintesisdanperembesanenzimluarseldidalamsatusel.
Nucleus
Y:
x:
Enzyme
PlasmamembraneDiagram1
Rajah1(a) BasedonDiagram1,nameXandY.
BerdasarkanRajah1,namakanXdanY.
1(a) [2marks][2markah]
2
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SULIT 3 4551/2
(b)Extracellularenzymesareenzymeswhichareproducedinthecellbutsecretedfromthecelltofunctionexternally.Enzimluarseladalahenzim-enzimyangdihasilkandidalamseltetapidirembeskandaripadaseluntukberfungsidiluarsel.(i) GiveoneexampleofthecellshowninDiagram1.
BerikansatucontohseldidalamRajah1.
[1marks][1markah]
(ii) ExplainwhatwillhappentotheproductionofextracellularenzymesifY
malfunctions.TerangkanapayangakanberlakuterhadappenghasilanenzimluarseljikaYtidakberfungsi.
[2marks]
[2markah]
(c) Eachenzymehasanoptimumtemperatureatwhichitsreactionrateisthefastest.Beyondtheoptimumtemperature,anenzymeissaidtobedenatured.Setiapenzimmempunyaisuhuoptimumdimanakadartindakbalasnyaadalahmaksimum.Suhuyangmelebihiparasoptimumakanmenyebabkanenzimternyahasli.
Explaintheabovestatement.
[2marks]
[2markah]
For
Examiners
Use
1(b)(i)
1
1(b)(ii)
2
1(c)
2
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SULIT 4 4551/2
For
Examiners
Use
1(d)
2
1(e)
3
(d) Ahousewifeusesanamylase-baseddetergenttowashherbloodstainedclothe.Shefoundoutthatthestainisnotremoved.Explainwhy.Seorangsurirumahmenggunakanserbukpencuciberasaskanamylaseuntuk
mencucibajunyayangterkenakesandarah.Beliaudapatikesandarahmasihada.Terangkanmengapa.
[2marks][2markah]
(e) Apatienthasgallstonesthatblockhisbileduct.Explaintheeffectofthissituationonthedigestionoflipid.Seorangpesakitmempunyaibatukarangyangmenyumbatsalurhempedunya.Terangkankesankeadaaniniterhadappencernaanlipid.
[3marks]
[3markah]
Total
A1
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12
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SULIT 5 4551/2
2 Diagram2showsacellularcomponentwhichisfoundinpalisademesophyllcellsofaleaf.Rajah2menunjukkansatukomponenselyangbolehdijumpaidalamselpalisadmesofildalamdaun.
OutsidethecellLuarsel
For
Examiners
Use
Q:
InsidethecellDalamselDiagram2
Rajah2
(a) (i) NamethecellularcomponentinDiagram2.
P:
NamakankomponenseldalamRajah2..
[1mark][1markah]
(ii) OnDiagram2,namePandQ.PadaRajah2,namakanPdanQ.
[2marks][2markah]
(b) (i) OnDiagram2,drawarrow()toshowthemovementofoxygenacrossthecellularcomponentduringdaytime.
PadaRajah2,lukisanakpanah()untukmenunjukkanpergerakanoksigenmerentasikomponenselinipadawaktusiang.
[1mark][1markah]
2(a)(i)
1
2(a)(ii)
2
2(b)(i)
1
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SULIT 6 4551/2
For
Examiners
Use
2(b)(ii)
3
2(c)(i)
3
2(c)(ii)
2
Total
A2
12
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(b) (ii) Explaintheanswerin(b)(i).
erangkanjawapanandadalam(b)(i).
[3marks]
[3markah](c) Inanexperiment,thepalisademesophyllcellisimmersedindistilledwaterfora
certainperiodoftime.Dalamsatueksperimen,selpalisadmesofilinidirendamkandidalamairsulinguntuktempohmasatertentu.(i) Explainwhatwillhappentothiscellularcomponent.
Terangkanapaakanberlakupadakomponenselini.
[3marks]
[3markah](ii) Drawalabelleddiagramoftheconditionofpalisademesophyllcellafter
beingimmersedinthedistilledwater.Lukisrajahberlabelkeadaanselpalisadmesofilsetelahdirendamkandalamairsuling.
[2marks][2markah]
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SULIT 7 4551/2
3 Diagram3showsthestagesinacelldivision.Rajah3menunjukkanperingkat-peringkatdidalampembahagiansel.
For
Examiners
Use
X YDiagram3
Rajah3(a) (i) NamestagesXandY
Namakanperingkat-peringkatXdanYX:
Y:[2marks]
[2markah](ii) BasedonDiagram3,statetwodifferencesbetweenthechromosomal
behaviourinstageXandstageY.BerdasarkanRajah3,nyatakanduaperbezaandiantaraperlakuankromosomdiperingkatXdanperingkatY.
2maks]
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3(a)(i)
2 3(a)(ii)
2
[2markah]
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SULIT 8 4551/2
For
Examiners
Use
3(b)(i)
1
3(b)(ii)
1
3(b)(iii)
2
(b) Numberofchromosomeinsomaticcellsofthisorganismis24.Bilangankromosomdidalamselsomatikorganismainiadalah24.
(i) StatethechromosomalnumberofeachdaughtercellproducedattheendofthedivisionshowninDiagram3.NyatakanbilangankromosomdidalamsetiapselanakyangterhasilmelaluipembahagianseldiRajah3.
[1mark][1markah]
(ii) Basedonyourbiologicalknowledge,giveareasonforyouranswer.Berdasarkan
pengetahuan
biologi
anda,
berikan
satu
sebab
untuk
jawapananda.
[1mark]
[1markah](iii) ExplainoneimportanteventthattakesplaceduringstageX.
TerangkansatuperistiwapentingyangberlakusemasaperingkatX.
[2marks]
[2markah]
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SULIT 9 4551/2
(c)BasedonDiagram3,drawoneofthedaughtercellsproducedattheendofthedivision.
BerdasarkanRajah3,lukiskansalahsatuselanakyangterhasildiakhirpembahagiansel.
For
Examiners
Use
[2marks][2markah]
(d)ExplainwhatwillhappeninhumanifthechromosomesfailtoseparateduringstageY.TerangkanapayangberlakupadamanusiajikakromosomgagalterpisahsemasaperingkatY.
[2marks]
[2markah]
3(c)
2
3(d)
2
Total
A3
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12
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Alveolicartilage
SULIT 10 4551/2
For
Examiners
Use
4(a)(i)
1
4(b)(ii)
1
4 Diagram4.1andDiagram4.2showthetissuesinrespiratorysysteminhumanandinplantrespectively.Rajah4.1danRajah4.2masing-masingmenunjukkantisu-tisudalamsistemrespirasimanusiadantumbuhan.
BronchiolBronkiol
bronchiole
ringsof
Alveolialveoli
StomataStomata
Diagram4.1 Diagram4.2Rajah4.1 Rajah4.2
(a) (i) StatetheorganinwhichthetissueinDiagram4.1canbefound.NyatakanorgandimanatisudalamRajah4.1bolehdijumpai.
[1mark][1markah]
(ii) Statethefunctionoforganstatedin(a)(i).Nyatakanfungsiorganyangdinyatakandalam(a(i).
[1mark][1markah]
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SULIT 11 4551/2
(b) ExplainhowgaseousexchangeoccursduringrespirationinDiagram4.1andDiagram4.2.TerangkanbagaimanapertukarangasberlakusemasarespirasidalamRajah4.1danRajah4.2.GaseousexchangeinDiagram4.1:PertukarangasdalamRajah4.1:
GaseousexchangeinDiagram4.2:PertukarangasdalamRajah4.2:
[4marks]
[4markah](c) StatetwodifferencesbetweentissuesinDiagram4.1andDiagram4.2.
NyatakanduaperbezaanantaratisudalamRajah4.1danRajah4.2
[2marks]
[2markah]
For
Examiners
Use
4(b)
4
4(c)
2
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SULIT 12 4551/2
For
Examiners
Use
4(d)
4
(d) Smokersdonotrealizethattheydestroytheirrespiratoryorganduringsmoking.Explainhowthishabitwillaffecttheintakeofoxygenefficiency.Perokoktidaksedarbahawamerekaakanmerosakkanorganrespirasisemasamerokok.Terangkanbagaimanatabiatinibolehmempengaruhikecekapanpengambilanoksigen.
[4marks][4markah]
Total
A4
12
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sRice,bread,meedankentang
SULIT 13 4551/2
5 Diagram5.1showsafoodpyramid:Rajah5.1menunjukkanpiramidmakanan:
For
Examiners
Use
PLipid,saltandsugarLemak,garamdangula
QMeat,chicken,fishandmilkDaging,ayam,ikandansusu
Fruitsandvegetables
RBuah-buahandansayur-sayurannoodleandpotatoes
Nasi,roti,
Diagram5.1Rajah5.1
(a) P,Q,RandSarethedifferentclassesoffoodthatmakeupthebalanceddiet.P,Q,RdanSadalahkelas-kelasmakananyangberbezadalamgiziseimbang.(i) NametheclassoffoodlabeledR
NamakankelasmakananberlabelR
[1mark][1markah]
(ii) StatethefunctionsoffoodinR
NyatakanfungsimakanandidalamR5(a)
[1mark]
[1markah] 2
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SULIT 14 4551/2
For
Examiners
Use
TypeoffoodJenis
makanan
Quantitytaken/gKuantitidiambil/g
Energy/kJper100gTenaga/kJ
per100g
Energyobtained/kJTenagadiperolehi/kJ
moderatelyactiveadultmanLelakidewasa
sederhanaaktif
boyaged15yearsold
Kanak-kanak
lelakiberumur15tahun
moderatelyactiveadult
manLelakidewasa
sederhana
aktif
boyaged15yearsoldKanak-
kanaklelakiberumur15
tahun
RiceNasi
300 400 2000 8000
WhitebreadRotiputih 100 150 1500 1500Butter
Mentega50 50 3000 1500 1500
Potatokentang
100 100 500 500 500
MilkSusu
100 200 300 300 600
BananaPisang
50 100 50 25 50
ChickenAyam 200 200 800 1600 1600
TotalenergyobtainedJumlahtenagadiperolehi
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Table5
5(b)
3
(b) Junkfoodisfoodthatishighinsugar,saltandfat.Explainthehealthproblemsfacedbyindividualwhocontinuouslytakenthisfood.
Makananrapuadalahmakananyangtinggikandungangula,garamdanlemak.Terangkanmasalahkesihatanyangdihadapiolehindividuyangmengambilmakananinisecaraberterusan.
[3marks]
[3markah](c) Table5showsthetypeandquantityoffoodtakenbyamoderatelyactiveadultman
andaboyaged15yearsold.
Jadual5menunjukkan
jenis
dan
kuantiti
makanan
yang
diambil
oleh
lelaki
dewasa
sederhanaaktifdankanak-kanaklelakiberumur15tahun.
Jadual5
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SULIT 15 4551/2
(i) CompleteTable5bycalculatingthetotalenergyobtainedbyeachindividual.LengkapkanJadual5denganmenghitungjumlahtenagayangdiperolehiolehsetiapindividu.
[2marks][2markah]
(ii) Explainwhyboyaged15yearsoldneedmoredailyenergyrequirementwhencomparedtomoderatelyactiveadultman.Terangkanmengapabudaklelakiberumur15tahunmemerlukanlebihkeperluantenagaharianberbandinglelakidewasayangsederhanaaktif.
[2marks]
[2markah](d) Diagram5.2showsaboysufferingfromnutrientdeficiencydisease.
For
Examiners
Use
5(c)(i)
2
5(c)(ii)
2
Diagram5.2Rajah5.2
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SULIT 16 4551/2
For
Examiners
Use
5(d)
3
(i) IdentifythedeficiencydiseaseshowninDiagram5.2.KenalpastipenyakitkekurangannutrienyangditunjukkandalamRajah5.2.
[1mark][1markah]
(ii) Statethecauseofthediseaseandpossibleeffectsonchildren.Nyatakanpuncapenyakitdankemungkinankesanyangdialamiolehkanak-kanak.
[1mark]
[1markah]
Total
A5
12
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SULIT 17 4551/2
SectionBBahagianB
[40marks][40markah]
Answeranytwoquestionsfromthissection.Jawabmana-manaduasoalandaripadabahagianini.
6 (a) Diagram6.1showtheasexualreproductioncarriedoutbyAmoebasp.Rajah6.1menunjukkanpembiakanaseksyangdijalankanolehAmoebasp.
Diagram6.1Rajah6.1
DescribetheprocessshowninDiagram6.1.HuraikanprosesyangditunjukkandalamRajah6.1.
[4marks][4markah]
(b)Amoebasp.isaunicellularorganismwhichlivesinfreshwaterenvironment.AlthoughAmoebasp.ismadeupofonlyasinglecell,itcanperformalllivingprocesses.Amoebasp.adalahsatuorganismauniselyanghidupdalampersekitaranairtawar.WalaupunAmoebasp.dibentukolehhanyasatusel,iabolehmelakukansemuaproseskehidupan.
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SULIT 18 4551/2
ExplainthelivingprocessthatenableAmoebasp.tosurviveinfreshwaterwhichishypotonictothecytoplasmicfluidofAmoebasp.TerangkanproseskehidupanyangmembolehkanAmoebasp.untukterushidupdalamairtawaryanghipotonikkepadacecairsitoplasmaAmoebasp.
[6marks][6markah]
(c) Diagram6.2showsahumanorganwhichisinvolvedinregulatingbodytemperature.
Rajah6.2menunjukkansatuorganmanusiayangterlibatdalampengawalansuhubadan.
Diagram6.2Rajah6.2
BasedonDiagram6.2,explainhowtheanimaltissuesareorganisedtoformtheorganinDiagram6.2andtheirrolesinregulatingbodytemperatureduringahotday.BerdasarkanRajah6.2,terangkanbagaimanatisuhaiwandiorganisasiuntukmembentukorgandalamRajah6.2danperananmerekadalammengawalsuhubadandalamsatuhariyangpanas.
[10marks][10markah]
7 (a) Explainwhythefertilisationprocessinfloweringplantisknownasdouble
fertilisation.Terangkanmengapaprosespersenyawaanpadatumbuhanberbungadipanggil
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persenyawaangandadua.[4marks]
[4markah]
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SULIT 19 4551/2
(b) Diagram7.1showstheformationoftheembryosacinafloweringplant.Rajah7.1menunjukkanpembentukanpundiembriodalamtumbuhanberbunga.
EmbryosacPundiembrio
Matureembryosac
PundiembriomatangDiagram7.1
Rajah7.1BasedonDiagram7.1describehowtheformationoftheembryosacoccurs.BerdasarkanRajah7.1,huraikanbagaimanapembentukanpundiembrioterjadi.
[6marks][6markah]
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SULIT 20 4551/2
(c) Diagram7.2showsmaleandfemalereproductiveorgansofaplant.Rajah7.2menunjukkanorganpembiakanjantandanorganpembiakanbetinabagitumbuhan.
AntherAnter
Filamentfilamen
MalereproductiveorganOrganpembiakanjantan
StamenStamen
Stigma
PollentubeTiubdebunga
OvaryOvari
EmbryosacPundi
Femalereproductiveorgan
OrganpembiakanbetinaDiagram7.2
Rajah7.2Basedonthediagram,describehowdoublefertilizationoccursintheplant.Berdasarkanrajah,huraikankanbagaimanapersenyawaangandaduaberlakudalamtumbuhantersebut.
[10marks]
[10markah]
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SULIT 21 4551/2
8 (a) Diagram8.1andDiagram8.2showtheimpactofhumanactivitiestothequalityofnaturalenvironment.Rajah8.1danRajah8.2menunjukkanimpakaktivitimanusiakeataskualitialamsemulajadi.
EmissionsgasfromthefactoriesPembebasan
gasdarikilang-kilang
DissolvedinwatervapourLarutdalamwapair
Diagram8.1Rajah8.1
Ultravioletrays
Sinaranultraunggu
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Diagram8.2Rajah8.2
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SULIT 22 4551/2
(i) StatethephenomenashowninDiagram8.1andDiagram8.2.NyatakanfenomenayangditunjukkandiRajah8.1danRajah8.2.
[1mark][1markah]
(ii) DiscussthedifferencesofbothenvironmentalphenomenashowninDiagram8.1andDiagram8.2basedonthefollowingaspects:
Thecauses Theeffectsand Thewaystoovercome
Bincangkanperbezaankedua-duafenomenaalamsekitaryangditunjukkan
di
Rajah
8.1
dan
Rajah
8.2
berdasarkan
kepada
aspek-aspek
berikut:
Punca
Kesandan Carauntukmengatasi
[10marks][10markah]
(b) ExplaintheimportanceofpreservationandconservationoftropicalrainforestinMalaysiaforthepurposeofsustainablemanagementofecosystem.
TerangkankepentinganpemeliharaandanpemuliharaanhutanhujantropikaldiMalaysiauntuktujuanpengurusanberterusanekosistem.[9marks]
[9markah]
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SULIT 23 4551/2
9 (a) Diagram9showthreetypesofneuronesinhumanbeing.Duringvoluntaryaction,alltypesofneuronesmustbecoordinatedtoreactonstimulus.Rajah9menunjukkantigajenisneuronyangterdapatdalammanusia.Semasatindakanterkawal,semuajenisneuronakandikordinasikanuntukbergerakbalas.
EfferentneuroneNeuroneferens InterneuroneInterneuron AfferentneuroneNeuronaferens
Diagram9Rajah9
AhmadisaJohorstategoalkeeper.ExplainhowAhmadisabletopushtheball
awayfromthegoalpostareainthepenaltykick.AhmadadalahpenjagagolnegeriJohor.TerangkanbagaimanaAhmadmampumenolakkeluarboladarikawasantianggolsemasasepakanpenalty.
[10marks][10markah]
(b) Homeostasisisthemaintenanceofconstantinternalenvironment.Thenormalbloodsugarconcentrationinhumanis75110mg/100ml.Homeostasisadalahpengekalanpersekitarandalam.Arasguladarahyangnormalpadamanusiaadlah75110mg/100ml.Explainhowtoregulatethebloodsugarlevelinthenormalrange.Terangkanbagaimanamengawalarasguladalamdarahpadajulatnormal
[10marks][10markah]
ENDOFQUESTIONPAPERKERTASSOALANTAMAT
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SULIT 24 4551/2
INFORMATIONFORCANDIDATESMAKLUMATUNTUKCALON
1.Thisquestionpaperconsistsoftwosections:SectionAandSectionB.Kertassoalaninimengandungiduabahagian:BahagianAdanBahagianB.
2.AnswerallquestionsinSectionAandanytwoquestionsfromSectionB.JawabsemuasoalandalamBahagianAdanmana-manaduasoalandaripadaBahagianB.
3.TheanswerstoSectionAmustbewritteninthespaceprovidedinthequestionpaper.
Importantstepsinanycalculationmustbeshown.
Jawapan
bagi
Bahagian
A
hendaklah
ditulis
pada
ruang
yang
disediakan
dalam
kertassoalanini.
4.TheanswerstoSectionBmustbewritteninseparateansweringpaper.Youmayuse
equations,diagrams,tables,graphsandothersuitablewaysmaybeusedtoclarifyyour
answers.JawapanbagiBahagianBhendaklahditulispadakertasjawapanberasingan.Andabolehmenggunakanpersamaan,rajah,jadual,grafdancaralainyangsesuaiutukmenjelaskanjawapananda.
5.Ifyouwish tochangeyouranswer,neatlycrossouttheanswerthatyouhavedone.Then
writedownthenewanswer.Jikaandahendakmenukarjawapan,batalkanjawapanjawapanyangtelahdibu
at.
Kemudiantulisjawapanyangbaru.6.Marksallocatedforeachquestionorpartquestionareshowninbrackets.
Markahyangdiperuntukkanbagisetiapsoalanatauceraiansoalanditunjukkandalamkurungan.
7.ThetimesuggestedtoanswerSectionAis90minutesandSectionBis60minutes.Andadinasihatisupayamengambilmasa90minituntukmenjawabsoalandalamBahagianAdan60minituntukBahagianB.
8.Thediagramsinthequestionsarenotdrawntoscaleunlessstated.Rajahyangmengiringisoalantidakdilukismengikutskalakecualidinyatakan.
9.Youmayuseanon-programmablescientificcalculator.
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Andadibenarkanmenggunakankalkulatirsaintifikyangtidakbolehdiprogram.
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SULIT 4551/3
4551/3
BiologiKertas3September
2011
1jam
Nama:
Kelas:
JABATAN PELAJARAN NEGERI JOHOR
PEPERIKSAANPERCUBAANSIJILPELAJARANMALAYSIA2011 4551/3BIOLOGIKertas3September20111jam Satujamtigapuluhminit
JANGANBUKAKERTASSOALANINISEHINGGADIBERITAHU
NO.KADPENGENALAN- -
ANGKAGILIRAN
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1. Tulisnamapenuh,kelas,nomborkadpengenalan dan angka giliran anda
2. Kertas soalan ini adalah dalam3. Soalan dalam bahasa Inggeris
mendahuluisoalanyangsepadandalam4. Calondibenarkanmenjawabkeseluruhan
atausebahagiansoalanandasamaadadalam bahasa Inggeris atau bahasa
padaruangyangdisediakan.dwibahasa.
bahasaMelayu.
Melayu.
5.Calondikehendakimembacamaklumatdihalamanbelakangkertassoalanini.
Kertassoalaninimengandungi12halamanbercetak
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SULIT 2 4551/3
Answerallquestions.Jawabsemuasoalan.
1.Agroupofstudentscarriedoutanexperimenttostudytheeffectofintraspesificcompetitiononthegrowthofpaddyseedlings.Sekumpulanpelajarmenjalankaneksperimenuntukmengkajikesanpersainganintraspesifikterhadappertumbuhananakbenihpadi.Diagram1showstheapparatusset-upoftheexperiment.Rajah1menunjukkansusunanradasuntukeksperimentersebut.
x 10cm x x x5cmx x x x x2cmx xxx x x
x x x
x x x xx x x x
x
x
x
x
xx xx xxx xx xxx xx xxx x x x x
TrayA TrayB TrayCKotakA KotakB KotakC
Diagram1
Rajah1Step1 :Threeseedlingtraysarefilledwith4kgofgardensoil.
Langkah1 :Tigakotaksemaiandiisikandengan4kgtanahkebun.Step2 :ThetraysarelabeledasA,BandC.
Langkah2 :Kotak-kotaksemaiandilabelkanA,BdanC.Step3 :IntrayA,30paddyseedlingsareseedlingedatadistanceof10cmintervals.
IntrayB,30paddyseedlingsareseedlingedatadistanceof5cmintervals.
IntrayC,30paddyseedlingsareseedlingedatadistanceof2cmintervals.Langkah3 :DalamkotakA,30anakbenihpadiditanampadajarak10cmberselang
seli
DalamkotakB,30anakbenihpadiditanampadajarak5cmberselangseli,DalamkotakC,30anakbenihpadiditanampadajarak2cmberselangseli
Step4 :Eachtrayiswatereddailywiththesameamountofwaterfor30days.Langkah4 :Setiapkotaksemaiandisiramtiap-tiapharidenganjumlahairyangsama
banyakuntuk30hari.Step5 :After30days,remove10paddyseedlingsrandomlyfromtrayA,trayBandtrayC.Therootsofseedlingsarewashedandwipedry.
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Langkah5 :Selepas30hari,10anakbenihpadidikeluarkansecararawakdarikotakA,kotakBdankotakC.Akaranakbenihdibersihdandilapkansehinggkering.
Step6 :ThedryweightofthepaddyseedlingsisrecordedinTable1.Langkah6 :BeratkeringanakbenihpadidicatatkandalamJadual1.4551/32011HakCiptaJPNJ SULIT
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SULIT 3 4551/3
Distancebetween
paddyseedlingsJarakantaraanak
benihpadi(cm)Dryweightof10paddyseedlings/(g)Beratkering10anakbenihpadi/(g)
10
g
5
g
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(a)RecordthedryweightofthepaddyseedlingsintheboxesprovidedinTable1.RekodkanberatkeringanakbenihpadididalamkotakyangdisediakandalamJadual1.
[3marks]
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[3markah][Lihathalamansebelah]
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SULIT 4 4551/3
For
Examiners
Use
Distancebetweenpaddyseedlings
Jarakantaraanakbenihpadi(cm)
Dryweightof10paddyseedlings/(g)Beratkering10anakbenihpadi/(g)
2
g
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1(a)
3
Table1
Jadual1
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SULIT 5 4551/3
(b)(i) StatetwodifferentobservationsmadefromTable1.NyatakanduapemerhatianyangberbezayangdibuatdaripadaJadual1.Observation1:Pemerhatian1:__________________________________________________________
__________________________________________________________
__________________________________________________________
Observation2:
Pemerhatian2:
__________________________________________________________
__________________________________________________________1(b)(i)
__________________________________________________________[3marks]
[3markah](ii) Statetheinferencewhichcorrespondstotheobservationsin1(b)(i).
Nyatakaninferensyangsepadandenganpemerhatiandi1(b)(i).Inferencefromobservation1:Inferensdaripadapemerhatian1:__________________________________________________________
__________________________________________________________
__________________________________________________________
Inferencefromobservation2:Inferensdaripadapemerhatian2:__________________________________________________________
__________________________________________________________
3
1(b)(ii)
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__________________________________________________________[3marks]
[3markah] 3
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SULIT 6 4551/3
For
Examiners
Use
(c)CompleteTable2basedonthisexperimentLengkapkanJadual2berdasarkaneksprimenini
VariablePembolehubah
ManipulatedvariablePembolehubahdimanipulasi
________________________
________________________
________________________
RespondingvariablePembolehubahbergerakbalas________________________
________________________
________________________
ConstantvariablePembolehubahdimalarkan
________________________
________________________
________________________
MethodtohandlethevariableCaramengendalipembolehubah
________________________
________________________
________________________
________________________
________________________
________________________
________________________
________________________
________________________
1(c)
3
1(d)
3
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able2
adual23marks]
3markah](d)Statet
hehypothesisforthisexperiment.Nyatakanhipotesisbagieksperimenini.
_______________________________________________________________
_______________________________________________________________
_______________________________________________________________[3marks]
[3markah]
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Growth rate =Dry
weigth
of
paddy
seed
=
SULIT 7 4551/3
(e)(i)Constructatableandrecordallthedatacollectedinthisexperiment.Binasatujadualdanrekodkansemuadatayangdikumpuldalameksperimenini.
Yourtableshouldhavethefollowingtitle.Jadualandahendaklahmengandungitajuk-tajukberikut.`Distancebetweenpaddyseedlings
JarakantaraanakbenihpadiDryweightof10paddyseedlings
Beratkering10anakbenihpadi
GrowthrateofpaddyseedlingKadarpertumbuhananakbenihpadi
Number of days
For
Examiners
Use
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1(e)(i)
3
[3markah]
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SULIT 8 4551/3
For
Examiners
Use
(ii) Usethegraphpaperprovidedonpage7toanswerthispartofquestion.Usingthedatain1(e)(i),drawthegraphofthegrowthrateofpaddyseedlingsagainstthedistancebetweenpaddyseedlingGunakankertasgrafyangdisediakandalamdimukasurat7untukmenjawab
soalanbahagianini.Menggunakandata1(e)(i),lukiskangrafkadarpertumbuhananakbenihpadimelawanjarakantaraanakbenihpadi.
[3marks][3markah]
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1(e)(ii)
3
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SULIT 9 4551/3
(f)Basedonthegraphin1(e)(ii),explaintherelationshipbetweenthegrowthrateofpaddyseedlinganddistancebetweenseedling.Berdasarkankepadagrafdi1(e)(ii),terangkanhubunganantarakadarperumbuhananakbenihpadidenganjarakantaraanakbenih._______________________________________________________________
_______________________________________________________________
_______________________________________________________________[3marks]
[3markah](g)Thisexperimentisrepeatedbyincreasingthedistancebetweenthepaddyseedlings
to20cm.Predicttheobservation.Explainyourprediction.Eksperimeninidiulangdenganmenambahjarakantaraanakbenihpadipada20cm.Ramalkanpemerhatian.Terangkanramalananda._______________________________________________________________
_______________________________________________________________
_______________________________________________________________[3marks]
[3markah](h)Basedontheresultfromtheexperiment,whatistheoperationaldefinitionofintraspesific
competition?
Berdasarkankeputusandaripadaeksperimenini,apakahdefinisisecaraoperasipersainganintraspesifik?_______________________________________________________________
_______________________________________________________________
_______________________________________________________________[3marks]
[3markah]
For
Examiners
Use
1(f)
3
1(g)
3
1(h)
3
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SULIT 10 4551/3
For
Examiners
Use
(i)Whenresourcesareinlimitedsupply,organismslivinginthesamehabitatwillcompeteforthesameresources.Thefollowingisalistoftheresources.Apabilasumber-sumbermenjaditerhad,organismahidupdihabitatyangsamaakanbersainguntuksumberyangsama.Berikutialahsenaraisumber-sumbertersebut.
Food Space LightMakanan Ruang CahayaWater BreedingmateAir Pasanganmengawan
ResourcescompetedbyanimalSumber-sumberyangdisaingioleh
haiwan
ResourcescompetedbyplantSumber-sumberyangdisaingioleh
tumbuhan
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InTable3,classifytheresourcesgiven,accor
dingtowhataretheresourcescompetedbyanimalsandresourcescompetedbyplants.DalamJadual3,klasifikasikansumber-sumberyanddiberi,mengikutapakahsumber-sumberyangdisaingiolehhaiwandansumber-sumberyangdisaingiolehtumbuhan.
Table3Jadual3
1(i)
3
[3marks][3markah]
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2.Transpirationisthelossofwatervapourbylivingplantsthroughevaporationtotheenvironment.Therateoftranspirationisaffectedbyexternalconditions.Transpirasiadalahproseskehilanganwapairolehtumbuhanhidupmelaluisejatankepersekitaran.Kadartranspirasiinidipengaruhiolehkeadaanluaran.Basedonthegiveninformation,planalaboratoryexperimenttostudytheeffectofwindspeedontherateoftranspirationinaplant.Berdasarkanmaklumatyangdiberi,rekabentuksatueksperimenmakmaluntukmengkajikesanlajuanginkeataskadartranspirasidalamsatutumbuhan
.
Theplanningofyourexperimentmustincludethefollowingaspects:Perancanganeksperimenandahendaklahmeliputiaspek-aspekberikut: Problemstatement
Penyataanmasalah Variables
Pembolehubah-pembolehubah
Hypothesis
Hipotesis
Listofmaterialsandapparatus
Senaraibahandanradasdigunakan Experimentalprocedure
Prosedureksperimen Presentationofdata
Caradatadipersembahkan
ENDOFQUESTIONPAPERKERTASSOALANTAMAT
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INFORMATIONFORCANDIDATESMAKLUMATUNTUKCALON
1.Thisquestionpaperconsistsoftwoquestions.Answerallquestions.
Score/Skor Description/Penerangan3 Excellent:Thebestresponse
Cemerlang:Responsyangpalingbaik2 Satisfactory:Anaverageresponse
Memuaskan:Responsyangsederhana1 Weak:AninaccurateresponseLemah:Responsyangkurangtepat0 Noresponseorwrongresponse
Responssalahatautiadamemberirespons
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Kertassoalaninimengandungiduasoalan.Jawabsemuasoalan.2.WriteyouranswersforQuestion1inthespacesprovidedinthequestionpaper.
TuliskanjawapanbagiSoalan1dalamruangyangdisediakandalamkertassoalan.3.TheanswersforQuestion2mustbewritteninseparateansweringpaper.Youmayuse
equations,diagrams,tables,graphsandothersuitablemethodstoexplainyouranswer.JawapanbagiSoalan2hendaklahditulispadakertasjawapanberasingan.Andabole
h
menggunakanpersamaan,gambarrajah,jadual,grafdancaralainyangsesuaiuntuk
menjelaskanjawapananda.4.Showyourworking,itmayhelpyoutogetmarks.
Tunjukkankerjamengira,inimembantuandamendapatkanmarkah.5.Ifyouwishtochangeyouranswer,neatlycrossouttheanswerthatyouhavedone.Then
writedownthenewanswer.Jikaandahendakmenukarjawapan,batalkanjawapanjawapanyangtelahdibu
at.
Kemudiantulis
jawapan
yang
baru.6.Thediagramsinthequestionsarenotdrawntoscaleunlessstated.
Rajahyangmengiringisoalantidakdilukismengikutskalakecualidinyatakan.7.Markallocatedforeachquestionsorpartquestionareshowninbrackets.
Markahyangdiperuntukkanbagisetiapsoalanatauceraiansoalanditunjukkandalam
kurungan.
8.ThetimesuggestedtoanswerQuestion1is45minutesandQuestion2is45minutes.MasayangdicadangkanuntukmenjawabSoalan1ialah45minitdanSoalan2ialah4
5
minit.9.Youmayuseanon-programmablescientificcalculator.
Andadibenarkanmenggunakankalkulatorsaintifikyangtidakbolehdiprogram.10.Handinallyouranswersheetsattheendoftheexamination.
Serahkankertassoalaninidiakhirpeperiksaan.Marksawarded/Pemberianmarkah:
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SULIT 4551/1(PP)
JABATANPELAJARANNEGERIJOHORPEPERIKSAANPERCUBAAN
SIJILPELAJARANMALAYSIA2011
BIOLOGI
PERATURANPERMARKAHANKertas1
UNTUKKEGUNAANPEMERIKSASAHAJA
AMARAN
PeraturanpemarkahaniniSULIT.Kegunaannyakhususuntukpemeriksayangberkenaansahaja.Sebarangmaklumatdalam
peraturanpemarkahaninitidakbolehdimaklumkankepadasesiapa.Peraturanpemarkahaninitidakbolehdikeluarkandalamapa-apabentukmedia.
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SULIT 2 4551/1(PP)
BIOLOGY
PAPER1MARKINGSHCEME
ENDOFMARKINGSCHEMEPERATURANPEMARKAHANTAMAT
Question Answer Question Answer
1 A 26 B2 A 27 D3 A 28 D4 C 29 D5 A 30 A6 C 31 D7 C 32 B8 D 33 D9 A 34 B10 D 35 B11 A 36 C
12 D 37 D13 C 38 D14 C 39 B15 C 40 C16 B 41 D17 A 42 C18 D 43 A19 A 44 D20 D 45 D21 B 46 C22 A 47 C23 C 48 C24 D 49 C25 C 50 A
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SULIT 4551/2(PP)
4551/2
Peraturan
Pemarkahan
Biologi
Kertas2September
2011
JABATANPELAJARANNEGERIJOHORPEPERIKSAANPERCUBAAN
SIJILPELAJARANMALAYSIA2011
PERATURANPEMARKAHANBIOLOGI
Kertas2
UNTUKKEGUNAANPEMERIKSASAHAJA
AMARAN
PeraturanpemarkahaniniSULIT.Kegunaannyakhususuntukpemeriksayangberkenaansahaja.Sebarangmaklumatdalam
peraturanpemarkahaninitidakbolehdimaklumkankepadasesiapa.Peraturanpemarkahaninitidakbolehdikeluarkandalamapa-apabentukmedia.
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Peraturanpemarkahaninimengandungi15halamanbercetak
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BIOLOGYPAPER2
Question MarkingCriteria Marks1 (a) AbletonameXandY.Answer:X:RibosomeY:Golgiapparatus
11 2
(b) (i) Abletogiveoneexampleofthecell
Answer:Pancreas//Ileum//stomachepithelialcell//salivarycell 1
4
(ii) AbletoexplaintheeffectontheproductionofextracellularenzymeiforganelleYmalfunction
Sample answers :F:Theproductionofextracellularenzymeisincomplete/
disrupted/affected.E1:(withoutGolgiapparatus/Y),theproteincannotbemodified
intoextracellularenzyme.E2:Proteincannotbesorted.E3:Extracellularenzymecannotbereleased/transportedtothe
targetedcell/organ. [Any2]
1
1
11
(c) Abletoexplaindenaturationofenzyme.
Sample answers :E1:Hightemperaturesalter/changethe(threedimensional)shape
oftheactivesiteofenzymemolecules.E2:substratesthuscannolongerfitintotheactivesitesofthe
enzyme.E3:thereactioncannotbecarriedout//substratecannotbe
hydrolysed. [Any2E]
1
1
1
2
(d) Abletoexplainthereasonwhythebloodstainedcannotberemoved.
Sample answers :E1:Bloodismadeupofprotein. 1
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MARKINGSCHEMESECTIONA[60MARKS]
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E2:Proteinisbrokendown/digestedbyProtease(enzyme).E3:ThereforetheuseofAmylase(enzyme)inthedetergent
powderwouldnotbeeffective.[Anytwo]
11
2
(e) Abletoexplaintheeffectofblockedbileductstothedigestionoflipids.
Sample answers :E1Gallstonesblockedthesecretionofbile.E2Lipidscannotbeemulsified.E3Therateoflipasereactionwillbecomeslower//digestionof
lipidswillbedisrupted/isincomplete.E4Thepatientmightfaceobesity//becomeobese.
[Any3E]
111
1 3
TOTAL 122 (a) (i) Abletonamethecellularcomponent.
Answer:Plasmamembrane//cellmembrane. 1
3
(ii) AbletonamePandQ.
Answer:P:PhospholipidbilayerQ:CarrierProtein
11
(b) (i) Abletodrawarrowtoshowthemovementofoxygenacrossthiscellularcomponentduringdaytime.
AnswerArrowfrominsidethecelltooutsidethecell,passthroughphospholipidbilayer
11
(ii) Abletoexplaintheanswerin(b)(i)
Sample answers :
E1(Duringdaytime),photosynthesisoccursinthecelltoproduceO2.E2O2diffusesfromhigherconcentrationregiontolower
concentrationregion//O2diffusesbyfollowingtheconcentrationgradient.
E3O2isnonpolarmolecule/smallmoleculeE4O2diffusesthroughphospholipidbilayer
[Any3]
1
111
3
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(c) (i) Abletoexplainwhatwillhappentothecellularcomponent.
Sample answerFThiscellularcomponent/plasmamembraneispushedagainst
thecellwall.E1Distilledwaterishypotonictothecellsap//Cellsapishypertonictodistilledwater.
E2WatermoleculesdiffuseintothecellbyosmosisE3Vacuoleexpands/swellsup.
[Any3]
1
1
11
3
(ii) Abletodrawalabeleddiagramoftheconditionofpalisademesophyllcellafterbeingimmersedinthedistilledwater.
Sample answer
DTheshapeofthecellmustberectangular.ThecellwallisdrawnwithdoublelineThevacuolemustbelarge
LLabelvacuole
*Rejectothershapeofthecell
1
1
2
TOTAL 12
3 (a) (i) AbletonamestagesXandY.
Answer:
X:
ProphaseIY:MetaphaseI 11 2
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PROPHASE1 METAPHASE1D1-Homologouschromosomesarearrangedrandomly
Homologouschromosomesarearrangedonthemetaphaseplate/equatorialplane
D2-Thecentromeresofthechromosomesarenotholdby/attachedtoanyspindlefibre.
Thecentromeresofthechromosomesareholdby/attachedtothespindlefibres.
D3-Crossingovertakesplace
betweenthenon-sisterchromatids
Crossingoverhasalready
takenplacebetweenthenon-sisterchromatids
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(c) Abletodrawonedaughtercellproducedattheendofthemeioticdivision.
Anyonedaughtercellwiththecorrectcombinationofchromosome
Correctdrawingofchromosome(numberandcombination)
D1Correctdrawingofthecell(chromosomesareenclosedinanuclearmembrane)D2
1
12
(d) AbletoexplaintheeffectinahumanifthechromosomesfailtoseparateduringstageY.
Sample answer :E1:Oneofthedaughtercellsproducedmightcontainoneextra
chromosome/onelesserchromosomeE2:Duringfertilization,ifthecellwithanextra/lesser
chromosomefuseswithanormalsperm,thezigoteshallcontainoneextra/47//onelesser/45chromosomesE3:producingDowns/Klinefelters//TurnersSyndromebaby
offspring[Anytwo]
1
1
1
2
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TissueinDiagram4.1(Human)
TissueinDiagram4.2(Plant)
D1-Alveolus Leaf D2-Carryoutrespiration Carryoutphotosynthesis
D3-Absentofchlorophyll Presenceofchlorophyll
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(d) Abletoexplainhowsmokingaffecttheintakeofoxygen
Sample answers :E1:Carbonmonoxide.E2:bindwithhaemoglobintoformcarboxyhaemoglobin
E3:lessoxygencombineswithhaemoglobin.E4:tobaccotarwillbedeposited/logged/accumulated(insidethelungs)
E5:reducediffusionofoxygenE6:HeatfromthesmokeE7:DrythesurfaceofthealveoliE8:Oxygencannotbedissolved
[Any4]
1
11
1111
4
TOTAL 12
5 (a) (i) AbletonametheclassoffoodlabeledR
AnswerRoughage/dietaryfibre 1
2
(ii) AbletostatethefunctionsofR
Answeraids/stimulatesperistalsis//preventconstipation//absorbingandeliminatingtoxicsubstances
1
(b) Abletostatethehealthproblems
AnswerP1.Overconsumptionofsalt(sodium)causeshighblood
pressureleadingtoheartdisease/strokeP2.Overconsumptionofsugarcausesoverweight/obesity
//diabetes//dentalcariesP3.Overconsumptionoflipidcausesobesity//cardiovascular
diseases
1
1
13
(c) (i) Abletocalculatetheenergyobtainedbyeachindividual
AnswerModeratelyactiveadultmanRice:6000Totalenergyobtained:11425
Boyaged15yearsoldWhitebread:2250Totalenergyobtained:14500
1
1
2
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SECTIONB[40MARKS]
Question MarkingCriteria Marks6 (a) AbletodescribetheprocessshowninDiagram6.1.
Sample answerP1TheprocessisbinaryfissionP2WhenAmoebasp.hasgrowntocertainsizeP3ThenucleusdividebymitosisP4Thenthecytoplasmdivides//CytokinesisoccursP5Form2geneticallyidenticalAmoebasp.
[Any4]
11111
4
(b) AbletoexplainthelivingprocessthatenableAmoebasp.tosurviveinfreshwaterwhichishypotonictothecytoplasmicfluid
ofAmoebasp.Sample answerP1ThelivingprocessisosmoregulationP2OsmoregulationinAmoebasp.involvedcontractilevacuoleP3FreshwaterishypotonictoAmoebasp.P4WaterdiffusesintoAmoebasp.byosmosis.P5Waterfillsthecontractilevacuoletoitsmaximumsize
11111
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P6ContractilevacuolecontractP7ExpelthewateroutoftheAmoebasp.P8Thus,Amoebasp.doesnotburst
[Any6]
111
6
(c) AbletoexplainhowtheanimaltissuesareorganisedtoformtheorganinDiagram6.2andtheirrolesinregulatingbodytemperatureduringahotday.
Sample answerP1ThisorganisskinP2Skinconsistsofepithelialtissues,nervetissues,muscle
tissuesandconnectivetissues(atleasttwotypesoftissues)P3EpithelialtissuesspecialisedtoformsweatglandP4SweatglandsecretesweatduringhotdayP5Epithelialtissuesspecialisedtoformhairfollicle/produce
hairP6MuscletissuesfoundinskiniserectormuscleP7(Duringhotday),erectormusclerelax,hairliesflatP8Muscletissues(foundatwallofarteriole)issmoothmuscleP9SmoothmusclerelaxduringhotdayP10ConnectivetissuesfoundintheskinisbloodtissuesP11Whensmoothmuscleofarteriolerelax,morebloodflowto
theskinP12moreheatislostP13NervetissuesisthereceptorP14Receptordetecttheincreaseofthetemperature
P15Thefunctionoftheskinistolowerthebodytemperaturetonormal
[Any10]
11
111
111111
1111
10
TOTAL 20
7 (a) Abletoexplaindoublefertilization
Sample answer:
P1:Becausetherearetwofertilizations.P2:Firstfertilizationhappenwhenoneofthemalegametefuses
withtheeggcellP3:toformzygote(2n)P4:Thesecondfertilizationhappenswhentheothermalegamete
fuseswiththetwopolarnucleiP5:toformatriploidnucleus(3n)/endosperm
[Any4]
11
11
14
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(b) Abletodescribehowtheformationoftheembryosacprocessoccurs.
Sample answer :
P1:Theovuledevelopsfromtheovariantissue.P2:Ithasanembryosacmothercell(2n).P3:Theembryosacmothercell(2n)undergoesmeiosisP4:toformarowoffourhaploidcells/megaspores(n)P5:Threeoffourmegasporesdie,leavingonemegasporeinthe
ovuleP6:Thenucleusofthemegasporethenundergoesmitosisthree
timesP7:toform8haploidnuclei.P8:3of8nucleimigratetooneendofthecelltoformantipodal
cells
P9:Another2nuclei,calledthepollarnuclei,movetothecentre.P10:1ofthe3nuclei(nearesttheopeningoftheovule/micropyle)developsintoaneggcell/femalegamete,
P11:flankedby2synergidcells(Thestructureformedisknownastheembryosacwheretheembryowilldevelop.)
[Any6]
11111
1
11
11
1
6
(c) Abletodescribehowdoublefertilizationoccursinaplant.Sample answers:P1:Megaspores(n)/haploidcells/tetraddevelopintopollen
grainsP2:Thenucleusofeachmegaspore(n)/haploidcell/dividesbymitosis
P3:toformonetubenucleusandonegenerativenucleusP4:(Whenapollengrainfallsonthestigma,)thesecretionof
sucrosesolutiononthestigmaP5:stimulates(thepollengraintogerminateto)formpollentubeP6:(Duringthegrowthofpollentube)thegenerativenucleus
dividesmitoticallyP7:toproducetwomalegametes.P8:thetwomalegametesmove/followbehindthetubenucleus
(downthepollentubeuntilthey)reachthemicropyle(andenterovulefordoublefertilisation)
P9:thetubenucleusdisintegratesP10:andthetwomalegametesentertheembryosac.P11:(Duringdoublefertilisation)onemalegametefuseswiththe
eggcell/ovumP12:toformadiploidzygoteandP13:theothermalegametefuseswiththetwopolarnuclei
1
1
11
11
11
111
1
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P14:toformatriploidnucleus(sodoublefertilizationoccurs)[Any10]
11 10
TOTAL 20
8 (a) Abletoexplainthedifferencesbetweenthetwohumanactivities
Criteria:1. Statethetypesofphenomena2. C:Differencesinthecauses3. E:Differencesintheeffects4. S:Differencesinthewaystoovercome
Sampleanswers:Diagram8.1 Diagram8.2
F1:(Thephenomenonis)acid (Thephenomenonis)thinningrain /depletionofozonel
ayer ThecausesC1:Combustion/Burningof Coolantsinairconditionersfossil fuels inpowerstations/ andrefrigerators/factories/motorvehicles propellantsinaerosolcans/
insulatingfoamC2:releasesulphurdioxide/ Releasechlorofluorocarbon/SO2andoxidesofnitrogen/ CFCmoleculesNOandNO2C3:Formsulphuricacidand Ultravioletradiation(strikesanitricacidwhencombinewith chlorofluorocarbon/CFC
watervapour moleculesandcausesachlorineatomtobreakaway//breaksthebondtoreleasethechlorineatom
C3:FalltoEarthasacidrain/ Chlorineatom(collidesand)snow/hail/fog/frost/dew destroystheozonemolecule
(toformchlorinemonoxideandoxygenmolecule)
[any2C=4m]Theeffects
Agriculture: Leafcellsandchlorophy
llareE1:Leachingofminerals// damagedbyultravioletrays//thesoilbecomeacidic lowertherateof
photosynthesis//reducecropyield
Aquaticecosystem: UltravioletrayskillE2:Increaseacidityinthe microorganisms/aquaticecosystem//kill phytoplankton//destroy//
1
2
2
2
2
2
2
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accumulateinsolublealuminiumionsinlakesandriverswhichkillaquaticorganismsHealth: Prolongedexposureto
E3:Acidicsoilreleasesionsofultravioletradiationleadtocertainheavymetals/ skincancer/melanoma/contaminatethesupplyof cataract/weakenedthedrinkingwater//irritatethe immunesystemlungs/makebreathingdifficult/asthma/bronchitis.E4:Corrodemetalrailing/ Greenhouseeffect/globalbridges/damagebuildings/ warming//damagetheeggsofstatues/automobiles/ certainamphibians//windstructuresmadeofstone/ patternschange//climaticmetal/historicbuildings changes
[Any2E=2m]Thewaystoovercome/SolutionsS1:Usescrubbers(toclean Reduce/stop/bantheuseofupemissionsfrompower Chlorofluorocarbon/CFCstationsandindustrialplants)S2:Usecatalyticconverters theworldcomplywiththe(tocleanupemissionsfrom MontrealProtocoltoreducevehicleexhausts) theuseofCFCs(tocuttheuse
ofCFCsinhalfbytheyear
1997) [AnyS=1m]
2
2
2
2
11
(b) Abletoexplaintheimportanceofsustainablemanagementoftropicalrainforest.
Criteria:1. Sustainablemanagementoftropicalrainforest2. Explaintheimportanceofconservationand
preservation
Sample answers
F1:Replantingtreesinareasthathavebeenlogged//reforestationE1:tokeeptheecosystem