2007 Biology Prelim HY Questions

8/2/2019 2007 Biology Prelim HY Questions

1/12

StMarysSeniorHighYear11Biology 2007

PreliminaryCourseHalf YearlyExamName:Teacher

Time Aliorn'sd : I hour plus 5 minutesreadrng imeFormatof Paoer

Part A : 8 X multiptrechoicequestions tctal marks : I iPartB : shortand ong response uestions total rnarks* 42 )

Insfrr"rctions:c boardapprovedcalculatorsma_v eusedc write usingblueor blackpsnc draq"diagrarns singpencil

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1d 2-nv;-MAN\)21


2/12

&4uiiipleCh*ice Ansl.ver n,JRssuiisSheet

Stticientame ...j T ai eac i i e rname : . . .

Resuits

Pari A : ir"fultipiechciice.Atternpt quesiions1- I anci iii in the gi:icl.

Seiect he alternativeA, B, C or D thatbestanswershequestionand ndicateYour choicewith a cross X) in the appropiatespaceon the grid beiow.

A B C D1,)343

67I


3/12

PertA:Qr iest ians-8 areniir tipre ch,*.ce r'"'+itli *iie iiiaik- eacir.F Fiii in the gri 'J r:rntt c ;--revii:rir:r:age,

i ) N4oharninedpiils some odirresolutiononto h:"eedifferentljpes of'paper.Henciic.es hai thev ail siain BLIT 'Jiehigli qualiry,expensive .vriiingpaperhas amuch iiarkerblue / blackstain.The orverqr,ralit-t,.heaper epershada smaiibrorur stain.The nrtst ikel,vconclusionwouldbe :(Ai the cliearrerpapersare actiialliraigher c'i*aliqr'trecausehe1,' lon'tstain as

* - r . ^ } .r ! t ( J L , l l

(ts) the higherquaiitypaper s the ln!1,onervithcelluiose{C; the c.heaper apersare ';aterproofiD) tFre igner quaiiry paperhasadcied iarch

/, J What roie does he organelle, hownbelow, play n thefunctioningof the cell?

(A) This(B) This(C) This(D) This

organelleorganelleorganelleorganelle

is the siteof aerobic espiration.is the siteof proteinsynthesis.is the siteof photosynthesisn piants.digestswastematerials nd oodwithin the cell.

outgr mexnbrrte


4/12

j) The diagrambelow is a vertical section hrough a leaf of a tenestrial lower ing plant.

PORs

In this eafmost hotosyntheticctivityakes lacen the issueabelled(A) P(B) O(C) R(D) S

.{\ A qrouo of strrdents iern'eC omepond water r:nder a m'icroscope t at l rnagnrfication of 100 X. Therr observationsof small srngle-ceileci rgamsmsareshownbelow. l . ll l n m * li - ll l

\r f-_) /\ v . /

If the diameter of the field of view was 1.4 mm thenthe averageength of anorgamsmwouid be ciosest o :A) 0.2m:nE) 0.4mmC) 0"8mmD ) 1 m m

iI.-_o-o

O O O


5/12

Consider he dinorant' - ' D ' - - ^ " and ts rev{ \

ftt

f z'YH.Y'DRI?,,GJ',.I

,{ \ .r-.r.r/.rlfrfirr, I,r__{ .u./\ | "JL_t "t

l:pH3nl',,1

\r-hich of the icilor-iing moleciiles( sho.,.,,rin the .liiagrami are most like .ito be ;rroductsof pirotos_rr:thesisi(A) rn+ieculeW cnly(B) moieculesV/ anclZ(C) molecutres anciY(D) molecuiesW andX

Ci) A student otices hat someonerom a previous lass asstucka eaf on thewindow.The eaf s stainedn someparts ut not n others. his eafwasprobably sedin an experimento showwhichof the ollowing

/ i " . : ian\,a. .^.- '- . i -e Stai f fgd, ' - r i IL( rv \ - . ) r - ( : , t r

(B ) iight is ;rceded irr staining eaves, ' . ^ t - i - ^ + , . , , , , ^ + L(. *,.i pnoiii S-r'ii i' leS S rer-iLi i e S StarnSiii) light is necessarycr pnarosvnrhesls


6/12

! i Which of the following canoniy(A) cell walls.(B) cirioropiasts.(C) ribosomes.(D) vacuoles

be seen hroughan electronmicroscope?

n A l , n n l a ^ i ^ - ^a v u t v r g o ' l o u L U > g

. 0 1 M l a c t o s e

r rl'

i l ) A student etup anexperimento nvestrgateheprocess f Cl ffusion. ls inea diaivsistube to representa cei l , three sugar solui ionsof di f ferentconcenrrat ionwereintroduced. he ci ia iysisubewas then rnmersedn a beaker ontainine he sugarconcenlrat ionshown.A dia_eramf the experiments shownbelow.NOTE: In th is experimenthe Ciaiysisubing s permeabieo waterand the sugarso' l t tespatd saiactose utnot actcse. heconcentrat ionf each ugar s ndicatedbvr s v v u v s r t s \ 4 l s v L U J v e g ! , : l v i t 4 e s v u v . 4 l r v v v r t v e t j L i g l t V l / V l v i f W t I J l - i ' ; . q , I i . ) I I J I J l L , A L ! U _ Jthe symbolM.

IIIn 1 L l n r l a ^ + ^ ^ ^. v I t v t g c t t d . L t J 5 =

n 2 [ l l a n l ^ ^ ^- u ! t v r r o u t l t _ i ) E

within a sh';rtperiod r;f time. ]/clu .+'(-)Lliii,xpectmovemeni(A i glucoseani iac.tcserornthe ceil ta thebeakeriB) giucaseandgaiactoserom theceii ic thebeakeriC i glucose }cin tiie ceil to th e i' eakeriD; galacicse anii iactose irr-rm he beaker into the cell

tseaker


7/12

Fa:t B . Quesiiotls9 - ii i e:eslronani i+rig e-qpot:seuesiiaiis 41marks9) i tctal n:arks -1coinplete he abJe elowby u,ritingdou,n henames f THREE celju,i tha iight microscope nd l ie unctionof EACH.

N{arksstructuresisible

aJ

Name of structure Funct ion

(a )

i 0) ( tctal inarks : 5 i

(b) Identify the marerials equired or phorosynthesis.

(c ) outline the role of photosynrhesisn ecosystems, )


8/12

i 1i ( ict"almark-s 6 ,i

(a ) Outline currentcell theory.Marks

(b ) Assess he mpactof technology,nciuding he ight microscope, n the developmentof cell theory.

1 2 ' ) ( t c t a i a r i l s : 4 itrxplain the reiationshipbet-.+.'eenhe shape 'f eavesand heir fi-inctisnnt h^l i-\c ' . /nfhPei c! _ , ! r v r L , L ' Y I r L r ! v r ! . u .


9/12

13) ( t , - r ia i arks:7 iMarks

During your studv of this colirse vou were required to perform an investif lationto demonstrate the eff-ect of surface area to volutne ratio on tire rate ofdiffusion.(a ) List thenecessaryquipment ou used

(b) Describe he experiment ou performed.

(c) Explain how thesurfacearea o volume ratio affects he rateof movementof substancesntoandout of celis. What is theconsequencef this for the maximum sizeof celis?


10/12

-

i4 ( totalmarks 7' )Theresults elowwereobtained y measuringight ntensity t different epthsn alake.

Depth Light intensi ty( lumcns ler sq.m.)0 70000AT 300007 l 50001 0 r 000

t ' )I J 8000L7 550070 40003 0 2500

Graph heseesults n hegraph aper elow.

bi Des:urjtrche ieiaiit;nshjp bel'rr,/c(j i light intensit-v n' j ilepih oir".,at,,Jrn the iake.

quesiion i4 c+ntinueil oi,e'r he page

Marks

(a )


11/12

Marksfufrei Gee,a keen'+i+iogist" tat"eciiatthat i"ie in the lal.:ewcujdli..'eneai tneai Gee?E;


12/12

__

Marla

Outl ine t l re hlee rnair rMoharnmed's sr.l,eet.steps r r l ie procedure o test or the presence f glr :cose n

16) itctai inari:s -? .

The follcr.r'inq iagram epresents fluid mosaicmociel f membrane tructure.

a )

b )

\ffi$[!Place WO labels nDescribehe unction

the diagrarn 2 urarl

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2007 Biology Prelim HY Questions