paper 1 midyear exam biology form 4 2010
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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&'.
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+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$$usion C Res%iration + -hotos'nthesis
8. +iagram shows a t'%e o$ animal tissue.
+iagram #hat is the tissue(
A E%ithelial tissue ) Connecti5e tissue C Smooth muscle tissue + S*eletal muscle tissue
9. +iagram 3 shows the %rocess o$ $ee&ing b'Amoeba s%.
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+iagram 3
#hich organelle is not in5ol5e& in the %rocess shown in the &iagram (
A L'sosome ) :oo& 5acuole C -seu&o%o&ia + Contractile 5acuole
;. #hen 5egetables are cut into small %ieces2 the
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+iagram 8
#hat %rocess in5ol5es in the mechanism(
A Osmosis
B +i$$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$$erent concentrations o$ sucrose solution.
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+iagram ;
)ase& on the gra%h2 which o$ the $ollowing concentrations o$ sucrose solution shoul&be use& so that a $lacci& %otato stri% regains its turgi&it'(
A 1.3 g %er 1== ml) ,.3 g %er 1== mlC /.3 g %er 1== ml
+ .3 g %er 1== ml
17. The &iagram shows three t'%es o$ %rotein structure.
#hich o$ the $ollowing is the correct e?am%le (
X @
A Enz'me eratin aemoglobin
) eratin aemoglobin Enz'me
C Enz'me aemoglobin eratin
+ eratin Enz'me aemoglobin
18. #hat are the contents o$ carboh'&rates(
A Carbon2 h'&rogen2 o?'gen an& nitrogen
) Carbon2 h'&rogen an& o?'gen.
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C Carbon an& h'&rogen.
+ Carbon an& o?'gen.
19. The e4uation below shows the $ormation o$ &isacchari&es through the %rocess X.
#hat is the name o$ %rocess X(
A. '&rol'sis an& con&ensation
). Con&ensation
C. '&rol'sis
+. -hotol'sis
1;. +iagram 1= shows the s'nthesis o$ an enz'me in a cell.
+iagram 1=
#hat will ha%%en i$ organelle T is not %resent(
A Energ' cannot be generate&
) Enz'me cannot be s'nthesise&
C -roteins s'nthesize& cannot be mo&i$ie&
+ -roteins s'nthesize& cannot be trans%orte&
,=. Lac* o$ 5itamin + in the &iet will cause the &isease
A scur5'. B beri>beri. C ric*ets. D %ellagra.
,1. #hich o$ the $ollowing gra%h shows the e$$ect o$ % on the metabolic rate o$ the enz'me %e%sin(
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X
C71,O7B C71,O7 C1,,,O11B ,O
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,,. +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$ore meiosis.
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+iagram 1,
#hich o$ 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(
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+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(
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#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
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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(
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/;. +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$$ering $rom a &isease.
+iagram 1;
#hich o$ the $oo&s A2 )2 C or + shoul& be ta*en o$ten b' the chil& to reco5er $rom the &isease(
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1. #hich o$ the $ollowing are the e$$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$$erent water tem%eratures.
III The controlle& 5ariable is the 5olume o$ sali5ar' am'lase use&.
IVThe 5olume o$ starch sus%ension use& is the controlle& 5ariable.
A " an& "" ) " an& """ C "" an& """ + "" an& "D
/. A &ish was %re%are& with agar
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3. +iagram ,= shows a cell $rom an o5ar' at telo%hase "" meiosis. #hat is the &i%loi& number o$
chromosomes in the %arent cell(
+iagram ,=
A / ) 7 C 1, + ,
7. +iagram ,1 shows setu% o$ an e?%eriment to stu&' osmosis.
+iagram ,1
The rise in the sucrose solution in the thistle $unnel a$ter /= minutes is &ue to the
I semi>%ermeabilit' o$ the cello%hane membrane
II higher atmos%heric %ressure at - than 6
III lower concentration o$ sucrose solution X than sucrose solution
IV %rocess o$ osmosis which results in the mo5ement o$ sucrose molecules X into thistle $unnel
A " an& """ ) "" an& """ C ""2 """ an& "D + "2 ""2 """ an& "D
8. +iagram ,,shows an e?%eriment to in5estigate the action o$ %rotease enz'me on a 1.=g cube o$ raw
meat. A$ter 13 minutes at ,=MC2 =.,3g o$ %rotein was con5erte& to amino aci&s. ow much %rotein
woul& be &igeste& i$ the e?%eriment was re%eate& at a
tem%erature o$ /=MC(
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+iagram ,,
A =.=g B =.13g C =.,3g D =.3=g
9. The gra%h shows the %ercentage o$ er'throc'tes that burst an& shri5el at &i$$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
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P Q R
A Crenate nchange& -lasmol'se&B -lasmol'se& nchange& Crenate
C aemol'se& nchange& CrenateD Crenate nchange& aemol'se&
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) :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
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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+
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