Paper 1 Midyear Exam Biology Form 4 2010

8/12/2019 Paper 1 Midyear Exam Biology Form 4 2010

1/18

1. The statement below shows the cell organization in a multicellular organism.

CELL X ORGAN SSTE! ORGAN"S!

#hich o$ the $ollowing is re%resente& b' X(

A Cartilage

) Stomach

C S*in

+ )one

,. #hich is an autotro%hic organism(

A -arasites ) alo%h'tes C Sa%ro%h'tes + Chemos'nthetic organism

/. The $ollowing in$ormation re$ers to organelle 0 "t has ribosome attache& to the membrane0 "ts $unctions is to trans%ort %rotein that are s'nthesize& at the ribosome

A Nucleus

) Golgi bo&'

C Rough en&o%lasmic reticulum

+ Smooth en&o%lasmic reticulum

. The $ollowing in$ormation re$ers to an organelle o$ a %lant cell.

#hich o$ the labele& %arts2 A2 )2 C an& + in +iagram 1 is the organelle(

+iagram 1

3. +iagram , shows the li4ui& com%osition o$ the human bo&'.

1


2/18

+iagram ,

#hich o$ the $ollowing $orm the internal en5ironment

A -2 62 R ) 62 R2 S C -2 R2 S + -2 62 S

7. +iagram / shows an organelle o$ a cell.

+iagram /

#hich %rocess onl' occurs in this organelle(

A Osmosis ) +i$$usion C Res%iration + -hotos'nthesis

8. +iagram shows a t'%e o$ animal tissue.

+iagram #hat is the tissue(

A E%ithelial tissue ) Connecti5e tissue C Smooth muscle tissue + S*eletal muscle tissue

9. +iagram 3 shows the %rocess o$ $ee&ing b'Amoeba s%.

2


3/18

+iagram 3

#hich organelle is not in5ol5e& in the %rocess shown in the &iagram (

A L'sosome ) :oo& 5acuole C -seu&o%o&ia + Contractile 5acuole

;. #hen 5egetables are cut into small %ieces2 the


4/18

+iagram 8

#hat %rocess in5ol5es in the mechanism(

A Osmosis

B +i$$usion

C -lasmol'sis

DActi5e trans%ort

1. +iagram 9 shows an animal cell.

+iagram 9

#hich o$ the $ollowing statements is true about structure X(

A "t allows onl' water to %ass through it

B "t &oes not allow an' substances to %ass through it

C "t allows onl' selecte& substances to %ass through it

D "t allows all substances to %ass through it

13. +iagram ; is a gra%h which shows the changes in mass o$ %otato stri%s immerse& in&i$$erent concentrations o$ sucrose solution.

4


5/18

+iagram ;

)ase& on the gra%h2 which o$ the $ollowing concentrations o$ sucrose solution shoul&be use& so that a $lacci& %otato stri% regains its turgi&it'(

A 1.3 g %er 1== ml) ,.3 g %er 1== mlC /.3 g %er 1== ml

+ .3 g %er 1== ml

17. The &iagram shows three t'%es o$ %rotein structure.

#hich o$ the $ollowing is the correct e?am%le (

X @

A Enz'me eratin aemoglobin

) eratin aemoglobin Enz'me

C Enz'me aemoglobin eratin

+ eratin Enz'me aemoglobin

18. #hat are the contents o$ carboh'&rates(

A Carbon2 h'&rogen2 o?'gen an& nitrogen

) Carbon2 h'&rogen an& o?'gen.

5


6/18

C Carbon an& h'&rogen.

+ Carbon an& o?'gen.

19. The e4uation below shows the $ormation o$ &isacchari&es through the %rocess X.

#hat is the name o$ %rocess X(

A. '&rol'sis an& con&ensation

). Con&ensation

C. '&rol'sis

+. -hotol'sis

1;. +iagram 1= shows the s'nthesis o$ an enz'me in a cell.

+iagram 1=

#hat will ha%%en i$ organelle T is not %resent(

A Energ' cannot be generate&

) Enz'me cannot be s'nthesise&

C -roteins s'nthesize& cannot be mo&i$ie&

+ -roteins s'nthesize& cannot be trans%orte&

,=. Lac* o$ 5itamin + in the &iet will cause the &isease

A scur5'. B beri>beri. C ric*ets. D %ellagra.

,1. #hich o$ the $ollowing gra%h shows the e$$ect o$ % on the metabolic rate o$ the enz'me %e%sin(

6

X

C71,O7B C71,O7 C1,,,O11B ,O


7/18

,,. +iagram 11 shows %art o$ the contents o$ a cell nucleus.

+iagram 11

#hat is (

A Chromosome ) Gene C Chromati& + +ouble heli? +NA

,/. #hich o$ the statement is true about the necessit' o$ %ro&ucing new cells in li5ing organisms(

A To re%lace &ea& an& &amage& cells.

) To %ro&uce male an& $emale gametes.

C To buil& new ner5e cells in the brain.

+ To &ecrease the number o$ cells $or the growth o$ the organism.

,. +iagram 1, shows the homologous chromosomes in organisms - an& 6 be$ore meiosis.

7


8/18

+iagram 1,

#hich o$ the $ollowing shows the %ro&uct o$ $ertilisation between organism - an& 6(

,3. Crossing o5er is an im%ortant %rocess in meiosis. "t results in 5ariations in the &aughter

cells. At which stage o$ meiosis &oes crossing o5er ta*e %lace(

A -ro%hase " ) -ro%hase "" C !eta%hase "" + Ana%hase "

,7. +iagram 1/ shows some o$ the stages in meiosis %rocess ta*ing %lace in a &i%loi& cell2 ,n

+iagram 1/

#hich o$ the $ollowing is the correct se4uence $or the stages(

A "2 ""2 """2 "D ) "2 """2 "D2 "" C "2 "D2 ""2 """ + "2 "D2 """2 ""

,8. #hich o$ the $ollowing are true about l'sosomes(

I -ro&uce& b' en&o%lasmic reticulum

IIContain h'&rol'tic enz'mes

IIISmall sacs co5ere& b' a single membrane

IVCan cause auto%hag' o$ &amage& or ol& cells

A "2 "" an& """ ) "2 "" an& "D C ""2 """ an& "D + "2 ""2 """ an& "D

,9. +iagram 1 below shows the brea*ing &own o$ com%le? molecules b' an enz'me.

#hich o$ the molecules A2 )2 C an& + re%resents the substrate(

8


9/18

+iagram 1

,;. +iagram 13 shows a %hase in mitosis o$ a %lant cell.

+iagram 13

#hich o$ the $ollowing is true about the cell in +iagram 13(

/=. #hich o$ the $ollowing statements are true about tissue culture(

I -ro&uce large number o$ %rogen' b' mitosis

IITissue is culture& in sterile nutrient me&ium an& un&er suitable tem%erature

III-ollination an& &is%ersal o$ $ruits an& see&s are not re4uire& .

IVThe members o$ a %articular clone are not geneticall' i&entical

A "2 "" an& """ ) "2 "" an& "D C ""2 """ an& "D + "2 ""2 """ an& "D

/1. #hich cell is a %ro&uct o$ a meiotic cell &i5ision(

9


10/18


11/18

#hat is the energ' 5alue o$ the %eanut (

A 378 Hg B 3= Hg C ,,.79 Hg D 1,9.7 Hg

/. The $ollowing results were obtaine& in an e?%eriment to &etermine the concentration o$ 5itamin C in at'%e o$ $ruit


12/18

A " an& "" onl' ) " an& """ onl' C "2 "" an& "D onl' + "2 ""2 """ an& "D

/8. #hich %rocess ta*es %lace in a root hair cell when o?'gen is not a5ailable(

A Acti5e trans%ort an& osmosis

) Acti5e trans%ort an& &i$$usion

C Acti5e trans%ort

+ +i$$usion

/9. The table shows changes in a cell &uring mitosis.

#hat are -2 62 R an& S(

12


13/18

/;. +iagram 19 shows the %hases in the mitotic cell &i5ision

+iagram 19

#hich o$ the $ollowing the statements is true about the chromosomes at stages X an& (

=. +iagram 1;shows a chil& su$$ering $rom a &isease.

+iagram 1;

#hich o$ the $oo&s A2 )2 C or + shoul& be ta*en o$ten b' the chil& to reco5er $rom the &isease(

13


14/18

1. #hich o$ the $ollowing are the e$$ects o$ a $armer a&&ing e?cessi5e $ertilizers to the $arm lan& %lante&

with 'oung maize %lants(

I The soil solution becomes h'%otonic

II The root cells are %lasmol'se&

III The %lasma membrane o$ root

IVThe maize %lants wilt an& &ie

A " an& "" ) """ an& "D C ""2 """ an& "D + "2 ""2 """ an& "D

,. "n an e?%eriment to stu&' the e$$ect o$ tem%erature on the rate o$ enz'matic reactions2 sali5ar'

am'lase2 starch an& water $or incubation at &i$$erent tem%eratures were use&.#hich statements can be

use& to $orm the h'%othesis(

I The res%on&ing 5ariable in the time ta*en $or the h'&rol'sis o$ starch to be com%lete&.

II The mani%ulate& 5ariable is the water baths set at &i$$erent water tem%eratures.

III The controlle& 5ariable is the 5olume o$ sali5ar' am'lase use&.

IVThe 5olume o$ starch sus%ension use& is the controlle& 5ariable.

A " an& "" ) " an& """ C "" an& """ + "" an& "D

/. A &ish was %re%are& with agar


15/18

3. +iagram ,= shows a cell $rom an o5ar' at telo%hase "" meiosis. #hat is the &i%loi& number o$

chromosomes in the %arent cell(

+iagram ,=

A / ) 7 C 1, + ,

7. +iagram ,1 shows setu% o$ an e?%eriment to stu&' osmosis.

+iagram ,1

The rise in the sucrose solution in the thistle $unnel a$ter /= minutes is &ue to the

I semi>%ermeabilit' o$ the cello%hane membrane

II higher atmos%heric %ressure at - than 6

III lower concentration o$ sucrose solution X than sucrose solution

IV %rocess o$ osmosis which results in the mo5ement o$ sucrose molecules X into thistle $unnel

A " an& """ ) "" an& """ C ""2 """ an& "D + "2 ""2 """ an& "D

8. +iagram ,,shows an e?%eriment to in5estigate the action o$ %rotease enz'me on a 1.=g cube o$ raw

meat. A$ter 13 minutes at ,=MC2 =.,3g o$ %rotein was con5erte& to amino aci&s. ow much %rotein

woul& be &igeste& i$ the e?%eriment was re%eate& at a

tem%erature o$ /=MC(

15


16/18

+iagram ,,

A =.=g B =.13g C =.,3g D =.3=g

9. The gra%h shows the %ercentage o$ er'throc'tes that burst an& shri5el at &i$$erent concentrations o$ saltsolutions

#hat ha%%ens to the

er'throc'tes at -2 6 an& R(

;. -rotease is use& as meat ten&eriser in $oo& %rocessing. #hich o$ the $ollowing is a %ro&uct o$ the

action o$ %rotease on a macromolecule(

A -rotein

16

P Q R

A Crenate nchange& -lasmol'se&B -lasmol'se& nchange& Crenate

C aemol'se& nchange& CrenateD Crenate nchange& aemol'se&


17/18

) :att' aci&

C Amino aci&

+ -ol'sacchari&e

3=. +iagram ,/ shows 5arious stages in &e5elo%ment o$ a clone& shee%.

+iagram ,/

#hich o$ the $ollowing statements is correct regar&ing the clone& shee%(

I "t is a cloning techni4ue b' nuclear trans$er

II S%ecialise& cells were use& in the cloning %rocess

17


18/18

IIIThe earl' embr'onic cells contain the +NA $rom the mammar' cell

IVThe surrogate )lac*$ace ewe ga5e birth to a lamb geneticall' i&entical to the original )lac*$ace

ewe egg cell &onor

A "2 "" an& """ ) "2 "" an& "D C ""2 """ an& "D + "2 ""2 """ an& "D

EN+

18

Documents

Paper 1 Midyear Exam Biology Form 4 2010