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CONFIDENTIAL*JABATMJABATA!I 964/1JABATM 'GERISEMBILAN JAGERISEMBILAN JA'GERISEMBILAN JA STPM 2011 lAB/LANviBILANlAB/LANJABA TAf\, . _ ,_nvn1 -.r-u H ,....;."GER/SEMBJLAN JA,_,,_. 1 r u .. , . _ ~ - v r - u , , -u ,., ,., _ '-''-' "'--''-'v'JBJLANJABA TANPELAJARANNEGERISEMBILAN JABA TANPELAJARANNEGERISEMBILANJABA TANPELAJARANNEGER/SEMBILAN JABA TANPELAJARANNEGER/SEMBILANJABATANPELAJARANNEGERISEMBILAN JABA TANPELAJARANNEGER/SEMBILANJABA TANPELAJARANNEGERISEMBILAN JABA TANPELAJARANNEGERISEMBILANJABA TANPELAJARANA . .AJARANNEGER/SEMBILANJABATANPELAJARAN!IJ BIOLOGY .AJARANNEGER/SEMBILANJABATANPELAJARAN/1.___ . ------- ... - - ....... __AJARANNEGER/SEMBILANJABA TANPEl A . I A R A ~ I N ! = ( : : ; ! = R I . C : ! = M R / 1 AN .lARATAMP!=! A.IARANMEGER!SEMBILANJABATANPEI Paper l EGERISEMBILANJABATANPEL EGER/SEMBILANJABA TANPELJ-\JJ-\r\J-\!VIvcL"JCr\!0CiVIDI LJ-\IV JJ-\DM 1 J-\IVr cLMJJ-\r \J - \ IVIvEGERI SEMBILANJ A B A T A N P E L A J A R A N N E G E R / . ~ - __ ,. ' . ' ' '- '-ANPELAJARANNEGER/SEMBILANJABATANPELAJARANNEGERI (1 '%hours) 'ANPELAJARANNEGER/SEMB/LANJABA TANPELAJARANNEGER/. "ANPELAJARANNEGER/SEMBILANJABA TANPELAJARANNEGERISEMBILAN JABA TANPELAJARANNEGER/SEMB/LAN

JABATAN PELAJARANNEGERI SEMBILANPERCUBAAN BERSAMA

S!JIL TJNGGI PERSEKOLAHAN MALAYSIA20 I I

Instructions to candidates:DO NOT OPEN THIS QUESTION PAPER UNTIL YOU ARE TOLD TO DO SOThere are fifty questions in this paper. For each question, four suggested answers aregiven. Choose one correct answer and indicate it on the multi-choice answer sheetprovidedRead the instructions on the multiple-choice answer sheer ve1y carefully.Answer all questions. M a r k ~ will nor be deducted for wrong answers.

This question paper consists of 17 printed pagesSTPM TRIAL 964/1 CONFIDENTIAL*

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CONFIDENTIAL* 2

1 Which part of a phospholipid molecule contributes most to the thickness of a cell surfacemembrane?A GlycerolB Hydrocarbon chainC Hydrophilic headD Phosphate group

2 A cell lacking oligosaccharides on the external surface of its plasma membrane would likely to beinefficient inA cell recognitionB transporting ions against an electrochernical gradientC maintaining fluidity of the phospholipids layerD establishing a diffusion barrier to charged molecules

3 The diagram below shows a type of disaccharide.C-H . ,OH

. . - t - - -o

HO

OH

Which of the following statements are true about the molecule shown above?I Has a-1, 2-glycosidic bondsII Has a-1, 4-glycosidic bondsI l l Formed from the condensation of two aldose sugarsIV Formed from the condensation of one ketose and one aldose sugar.

A l and l i lB l and IVC II and IIID II and IV

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CONFIDENTIAL* 34 Which of the following statements are true about respiration?

1 Glycolysis causes 6C glucose to be broken up into two 3C pyruvatecompound.

II Krebs cycle and electron transport system occur in the cell cytosol.IU The Krebs cycle involved decarboxylation and dehydrogenation.IV During glycolysis, substrate level phosphorylation occurs twice.

A I onlyB ]] and lll onlyC I, Ill and IV onlyD I, II, Ill and IV

5 Which statement is true of translation during protein synthesis?A The enzyme aminoacyl-tRNA synthetase activates an amino acidB DNA carries codons complementary to bind with ribosomeC The RNA polymerase is used to synthesis mRNAD The initiation of protein synthesis start with codon UAA on mRNA

6 Which of the following combinations correctly matches a description and aprocess?

Description ProcesslA The production of the amino acid sequence of a protein as Transcriptiondetermined by the base sequence of mRNAB The semi-conservative replication of a DNA molecule to form DNA synthesiswo identical moleculesc The production of mRNA molecules by joining together of TranslationnucleotidesD The joining of nucleic acids in a specific sequence as Protein synthesisdetermined by the base sequence of DNA

!I

7 Which of the following statements is a correct distinction between autotrophs and heterotrophs?

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A Only heterotrophs require chemical compounds from the environment.B Cellular respiration is unique to heterotrophs.C Only heterotrophs have mitochondria.D Autotrophs can nourish themselves using C02 and other nutrients that areentirely inorganic while heterotrophs cannot.

*This question paper is CONFIDENTIAL until the examination is overCONFIDENTJAL *

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CONFIDENTIAL* 48 Rate of photosynthesis is higher in C4 plants than C1 plants in tropical orsubtropical country which has higher temperature or light intensity. This is

becauseI PEP has a high affinity towards carbon dioxide.II the high concentration of carbon dioxide prevents the attachment of

oxygen with PSII.Ill less photorespiration occurs.IV high concentration ofC02 (in bundle sheath cell).

A I and IllB I, II and IVC I, Ill and IVD I, II, lll and IV

9 What do both mitochondria and chloroplast have in commonI A TP is producedII DNA is presentIII Ribosomes are present

A I onlyB I and IIC II and IllD l, II and Ill

10 Which of the following statements about the excess amino acid in mammal's protein metabolismare true?

l Deamination occurs and amino acid is excreted as ammonia in urine.II Deamination occurs and amino group is excreted as urea.IJ [ Excreted as albumin in urine.IV Produces other amino acid needed through transamination.

A I and II onlyB I and ll l onlyC II and IV onlyD Ill and IV only

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CONFIDENTIAL* 511 The scheme below outlines the major steps in the industrial production of the sweetener fructose

syrup from starch.

Starchsuspension --

What type of enzymes are involved in steps I and II ?A OxidasesB HydrolasesC DecarboxylaseD Dehydrogenase

12 During cyclic photophosphorylation,I no PS II is involved.II no oxygen is evolved.III no NADPH is made.IV A TP is still made.

A I, II and IIIB I, II and IVC II, II I and IVD I, II, Ill and IV

C-llucoseanclfi'UCtOSE'

13 Arrange the following statements in the correct sequence for the mechanism of stomatalopening based on the starch-sugar hypothesis.

I Sugar produced reduces the water potential of the cellI! The guard cells become turgidII I Water diffuses in from neighbouring cells into the guard cellsIV Photosynthesis takes place in the chloroplast

A I, ll, III, IVB Ill, IV, ll, IC IV, 1, Ill, IID IV, Ill, U, 1


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CONFIDENTIAL* 614 The graph below shows the oxygen dissociation curves for two values of pH.

Percentage of oxygensaturation (%)

100

50

050

Which statement about the curve is true?100

A The increase in pH is due to vigorous activities.

Partial pressnre of oxygen (mmHg)

B The increase in pH causes the curve to shift to the rightC The percentage of oxygen-saturated haemoglobin decreases when pH increases.D The shifting of the curve to the right is due to an increase in concentration of blood

carbon dioxide.

15 The diagram shows some adjacent cell from a root of a plant. Which is the symplastpathway of water movement?

B

cD


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CONFIDENTIAL* 716 Which hypothesis oftransiocation in phloem assumes that energy required for

translocation is obtained from a potential difference across a sieve plate?

A Cytoplasmic streaming hypothesisB Electro-osmosis hyphothesisC Cohesion-tension hypothesisD Peristaltic wave hypothesis

17 Diagram below shows the ornithine cycle.

INH

i -, /(~ ~ H , O I...

y

H,O zWhat substances do W, X, Y and Z represent?

w X y zA Urea C02 Citruline ArginineB Urea Citruline Arginine C02c C02 Arginine Citruline UreaD C02 Citruline Arginine Urea

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CONFIDENTIAL* 818 The diagram below shows a part of the sequence of events which occur during muscle

contraction.

What are P, Qand R?pABcD

NeurotransmittersImpulseNeurotransmittersImpulse

P arrives at T tubules

Q is released into sarcoplasm

Q binds to troponintMyosin-binding sites exposed

Formation of R

QCalcium ionsSodium ionsSodium ionsCalcium ions

RCross-bridgeCross-bridgeMyosinCross-bridge

19 The diagram below shows the potential difference across the membrane of a giant axon.

50

B -C

time

Which of the phases shown is depolarisation?964/J*This question paper is CONFIDENTIAL until the examination is overCONFIDENTIAL*

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CONFIDENTIAL* 920 Which of the following statements are functions of the liver?

I It detoxifies the bloodII It receives glucose from the small intestine and releases it into the blood at a

suitable rate!II It also capable of producing glucose from non-carbohydrate sourcesIV It plays a role in protein metabolismA I and II onlyB II and Ill onlyC I, II and l l l onlyD I, IL III and IV

21 The diagram below shows a schematic control of hormones m human female reproductivesystem,

Hypothalamus I

Anterior pituitary glandI I II

OvaryFollicular cells Corpus luteum

I l l IV

Uterus and secondary growthcharacteristics

Which of the followings match the hormones represented by numbers I, II, l i i and IV in the above

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diagram correctly?ABcD

IFSHFSHFSHLH

IIOestrogenLHLHProgesterone

Il lLHProgesteroneOestrogenFSH

*This question paper is CONFIDENTIAL until the examination is overCONFIDENTIAL*

IVProgesteroneOestrogenProgesteroneOestrogen

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22 The diagram below shows responses of a group of flowering plants towards differentphotoperiods.

:.:::enC CO.E:!I

24 hours --1>Which of the following statements is/are true?I The plants are short-day plants

No flowering

No llowering

Il The plants will flower when the night length is more than a critical night lengthIll The plants are long-day plantsIV The plants will flower when the night length is less than a critical night length

A I and IIB II and l iiC I and IVD III and IV

23 The following statements describe the immune system.

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I Humoral response involves mainly B-lymphocytesII Immune system recognizes foreign tissues as self.Ill Cytoxic T-cells are deactivated when they interact with infected cellsIV Cell-mediated immune response is initiated by the formation of antigen-presentingcells (APC)

Which of the above are true?A I and IIB ll and IllC I and IVD l i l and IV


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CONFIDENTIAL* 11

24 HIV attacks macrophage cells becauseA macrophage cells have receptor sites recognised by HJVB macrophage has a weaker defence system compared to other cellsC macrophages are more easily detected by HIV compared to other cellsD B-lymphocytes hydrolyse RNA ofHIV that enters its cell

25 What is the advantage of sexual reproduction compared to asexual reproduction?A The process of sexual reproduction is faster and the necessity for two parents does notanse.B In sexual reproduction progeny is genetically identical to its parent.C Sexual reproduction permits the recombination of genetic material from different parents.D Sexual reproduction usually happens in plants, prokaryotes and mosses.

26 Which type of reproductive system is observed in viruses, bacteria, mould and lower orderplants?A BuddingB Binary fissionC SporulationD Regeneration

27 The function of HCG during pregnancy is to maintain theA corpus IuteumB development of embryoC thickness of uterine wallD secretion of oestrogen from the placenta

28 Which portion of the blastula becomes embryonic placenta?A AmnionB ChorionC Inner cell massD Embryonic disc


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CONFIDENTIAL* 12

29 The diagram below shows three different types o f g r o ~ - V t h curve

\\

,---r :

Which of the following are the correct combinations?Growth curve Growth rate curve Relative growth rate curve

A X zB X yc y XD z y

30 The graph below shows the growth pattern of a fish.

What type of growth pattern is shown here?A Isometric growthB Allometric growthC Unlimited growthD Intermittent growth

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yzzX

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31 In a fruit fly, the gene for grey body (B) is dominant over the gene for black body (b).Two grey fruit flies were mated and they produced 75 grey bodied flies and 25 black bodied flies.What is the most likely genotype of the parents?A bb x bbB Bb x bbC Bb x BBD Bb x Bb

32 Multiple alleles areA both alleles in a heterozygote are dominant and fully expressed in phenotypeB both alleles that give partial influence in heterozygous formC more than two alternative forms a particular gene that occupy the same locusD genes that results in the death of an organism.

33 Polyploidy describesA phenomena that may occur as a result of chromosomes failed to separateB a defect that is fatal in humansC a condition in which may be the result of more than one sperm fertilizing an eggD all of the above

34 A geneticist found that a particular mutation had no effect on the polypeptide coded by a gene.This mutation probably involvedA deletion of one nucleotideB a substitution of one nucleotideC alteration of the start codonD Insertion of one nucleotide

35 In a population of 1000 people, test of blood type genes show that 160 have genotype AA, 480have the genotype AB and the rest have the genotype BB. Calculate the frequency of the B allele.A 0.001B 0.060c 0.400D 0.600


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CONFIDENTIAL 14

36 Which of the following statements is true of the Jacob-Monod theory of gene regulation?A The regulator gene codes the ~ - g a l a c t o s i d a s e enzymeB The operator region is the binding site for RNA polymeraseC The structural gene is not transcribed when the repressor protein binds

with lactoseD The structural gene is ,1ctive due to the repressor protein produced by the

regulator gene.

37 Which of the following statements is the definition of gene pooPA Total number of genes on all chromosomes in an organismB Total number of alleles on all chromosomes in an organismC Total alleles in all genes in all chromosomes in an organismD Total alleles in all genes in all chromosomes in all organisms in a population

38 An operon consists ofA The regulator, operator and promoter genes onlyB The structural, promoter and operator genes onlyC The structural, regulator, operator and promoter genes onlyD The structural, promoter and regulator genes only

39 Which of the following statements about the use of plasmid as a vector in recombinant DNAtechnology are true?I Has the ability to self replicate outside the cellII Has one or more restriction sites recof'.nized bv restriction enzvmes"Ill Enters bacteria through the transformation processIV Usually carries the code for antibiot ic resistance.

A I, II and IllB I, II and IVC IL Ill and IVD I, II, Ill and IV

40 Which statement best describes restriction enzymes?

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A They are named according to their actions.B They cu t double-stranded DNA to produce blunt endsC They cut double-stranded DNA at specific nucleotide sequencesD They are used in recombinant DNA technology to join two DNA

fragments,


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CONFIDENTIAL* 15

41 Which of the following criteria could not be used to determine hmv closelyrelated two different organisms are0A DNA hybridisationB Developmental stagesC The presence of homologous structuresD Habitat preferences

42 The evolution of individual species after divergence from ancestor shared withother species is represented by the branching diagram below

) ~ J a R a y - l ~ n n e ( i S h ~ r k : ; 1 1 ~ ) 1 f t . m p h i b i ; = , n ~

The branching diagram is called aA cladogramB dendrogramC phylogeny chartD taxonomic hierarchy

d i ~ 4 i J R o d e n t ~ . Prirnate: B r a b b i T ~ Crocodile: Birds

43 Which of the following is an example of in situ conservation?A Botanical gardensB ZoosC Gene banksD Parks


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44 Which of the following are true of kingdom Prokaryotae?I It includes bacteria and cyanobacteria.II The DNA is enclosed by a nuclear membrane.III Membranous organelles are present.IV They are unicellular organisms.

A I and lJlB I and IVC II and IIID lJ and IV

45 Which of the following shows the impmiance of variation?I It restrict a species to a narrow range of habitats and niches.II It provides the raw material for evolution.Ill It leads to extinction of a population.IV It increases the ability of a species to survive in a changing environment.

A I and lJB I and IIIC II and IVD Ill and IV

46 Which of the following is not an example of discontinuous variation?A Skin colour.B Tongue rolling.C Human ABO blood group.D Ability to taste bitter chemical phenylthiocarbamide.

47 Which of the following statements is not true about carrying capacity?A Total number of organisms that can be supporied by environmental resourcesB Carrying capacity of an ecosystem is constantC Carrying capacity is limited by limited resourcesD Affected by environmental conditions


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48 Which of the following is correct about the transfer of energy in an ecosystem0I There are commonly 4 or S trophic levels.II Energy is transferred f>om the primary producers to the herbivores.III Each trophic level receives less energy than the trophic level below it.IV Primary producers trap approximately 90% of the light energy that reaches the earth.

A I, II and IIIB I,liand!VC I, Ill and IVD I, 11, III and IV

49 Which of the following is the correct ecological hierarchy in an ascending order?A Organism, population, community, ecosystem, biome, biosphere.B Organism, population, community, ecosystem, biosphere, biome.C Organism, community, population, ecosystem, biome, biosphere.D Organism, community, population, ecosystem, biosphere, biome.

50 Which population grmvth curve will be produced if environmental resistance is absent?A sigmoid curveB J-shaped curveC Linear curveD Exponential curve


stpm_bio_p1_2011

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