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Ihe following information are features ofan organelle in a cell.. Spherical or oblong shaPed. Smooth outer membrane and foldedinner membrane

Time:

4 The main componmembrane areA lipid and carbohB protein and carbC protein and liPi

onz This questionpaper consistsof 50 questions.Answer allquestio

Section A

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; j7 of the following is a connective 1l The figure shows thea fish.

What is organ X?A LungB KidneyThe figure shows adieotyledon root co

The information belowclasses and their energTthe following rePresentsshows four foodcontent. Which offats?

Food class Enerry contcnU kI Per10o g

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195 The diagram shows, parts of the humanbrain.

Which of the following pairs of part of brainand its function is correct?

The figure showschromosomes.Thegenes in the chroPqRsTUvW

Part ofbrainAP

FunctionControls peristalsismovementControls balancing ofa

$ 20 Which of the folloMendel's experimeA Colour of leafB Number of seC Size of fruit

P q RST and t representA allelesB genotype

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i.,2l A former mining gtound can form a primaryforest.Which of the following sequences s correctin the formation of the primary forest?A Successor,climax community, pioneerB Pioneer, climax community, successorC Successor,pioneer, climax community

- D Pioneer, successor,climax communityv 24 What is "biochemical oxygen demand". GOD)?A The quantity ofoxygen produced by anaquatic organism

B The quantity of oxygen used by anaquatic organismC Indicator t0 measure the level of,waterpollutionD Indicator of the amount of a waterpollutant

C Site of proteinsynthesisD Site ofglycoprosynthesis

27 An experiment wasthe effect ofconcenton the mass of poThe initial massobtained. They werand the final massThe graph showexperiment.Which of the gramay be expected the sucrose solutio0.04 mol dm-3?

+Masshange/g

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29 The graph shows the optimum pH of anell'zyrne Y in its reaction.Rate ofreactionof enzymeY

I2345678910pHEnzyme Y isA salivary amylase C trypsinB pepsin D rennin30 The diagram shows cross sections of theleaves offow different hibiscus species.Which of the following leaves A B, Cor D, will produce the highest rate of

33 An experiment wasthe rate of water loThe wind and relatkept constant.The graph shows 0600 to 1300 houWhich of the curyeto show the rate oafter 1300 hours?160

Rauof 14Tatr lr0F*. rmnff' mm

40nphotosynthesis?

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381:|5 A child runs very fast when chased bYa fierce dog.Which of the following reactions occur inthe child's body?I Blood glucose level increasesII Metabolic rate increases '''III Body temperature decreasesfV Rate of heart beat increases 'A I and II onlyB III and fV onlyC I, II and fV onIYD II, III and IV onlyThe figure shows stages n the developmentof an embryo sac in the ovule of a floweringplant.

The figure showstraits in pea plantsThe allele for smooto the allele for wriThe allele for purpleto the allele for whKey: S : snooth seedoninant a

s : wrinkled srecessivea

36

Embryo sacmother cell 4 megasporeceIIs

ParentsParents'genotype

P

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41 The table shows changes in a cell during mitosis.StageStructuriin cell P

{1t".a 'i RNucleus membrane Present Nit NilChromosome At cell poles Move towardscell poles At the eqof celCytoplasm Divides Does not divide Does not dSpindle fibre Nil Present Presen

What are P, Q, R and S?PA AnaphaseB MetaphaseC TelophaseD Prophase

aMetaphaseProphaseAnaphaseTelophaseR

ProphaseTelophaseMetaphaseAnaphase

STelophaseAnaphaseProphaseMetaphase

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45 An experiment was carried out to investigatethe rate of transpiration in a plant usinga potometer.tUe ngrr"" showsthe set up of the apparatus,tirne taken in minutes andthe distancecoveredby the meniscus of the water in cm'

47 Figure 1 shows thecoleoptile to auxin inJelly block withu* - fi__-..._""lTJ

I I l- | Maize co! l l !#li.\:ii..j;::lla!'t;ngjgeginniDg of exPerimentFigure

Another experimenas shown in FigurelMovement of water colunnMeniscus

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49 The figure shows a monohybrid crossbetween durian tree P and durian tree Q.507o of the offspring are tall and 507o arcdwarf.Parents Durian tree P X Durian tree Q

(Tall) I (Dwarf)VVOffspring Durian tree R Durian tree S(Tall) (Dwarf)

Ifdurian tree R is crossedwith durian treeS, what percentage of the trees producedwill be dwarflA OVoB 25Vo

'r'50 The table shows thpopulation of gardgarden.Numb

Visit MarFirst 2Second(After aweek)

5

The estimated popuC 50VoD 75Vo

snails isA20B L25

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SPM DGMINATION PAPER 2OO52B 3B 4C 58B 9B 10D 1114 A 15B 168.17 20 D,21 C 22 B 2326A27C28C29C308

32 A 33D 34 D 3538,D 39A 40 B 4r44c 45 A 46 A 4750D

Paper I1D7A13A19A25A

31 C37A43c49C