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  • 8/8/2019 Paper 1 Kedah (STPM)

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    SULIT*

    964/1

    PERCUBAAN

    STPM 2010

    BIOLOGY (BIOLOGI)

    PAPER 1 (KERTAS 1)MULTIPLE-CHOICE (ANEKA PILIHAN)

    One hour and forty-five minutes (Satu jam empat puluh lima minit)

    PEPERIKSAAN PERCUBAAN BERSAMA

    SIJIL TINGGI PERSEKOLAHAN MALAYSIA 2010

    ANJURANPERSIDANGAN KEBANGSAAN PENGETUA-PENGETUASEKOLAH MENENGAH MALAYSIA (PKPSM) KEDAH

    Instructions to candidates:

    DO NOT OPEN THIS BOOKLET UNTIL YOU ARE TOLD TO DO SO

    There are fifty questions in this paper. For each question, four suggested anwers are given. Choose one correct answer and indicate it on the multiple-choice answer sheet

    provided.

    Read the instructions on the multiple-choice answer sheet very carefully.

    Answerall questions. Marks will not be deducted for wrong answers .

    Arahan kepada calon:

    JANGAN BUKA KERTAS SOALAN INI SEHINGGA ANDA DIBENARKAN BERBUATDEMIKIAN.

    Ada lima puluh soalan dalam kertas ini. Bagi setiap soalan, empat cadangan jawapan

    diberikan. Pilih satu jawapan yang betul dan tandakan jawapan itu pada helaian jawapananeka pilihan yang dibekalkan.

    Baca arahan pada helaian jawapan aneka pilihan itu dengan teliti.

    Jawab semua soalan. Markah tidak akan ditolak bagi jawapan yang salah

    ________________________________________________________________________This question paper consists of 36 printed pages

    (Kertas soalan ini terdiri daripada 36 halaman bercetak)

    STPM 964/1 [Turn over (Lihat sebelah)

    This question paper is CONFIDENTIAL until the examination is over. CONFIDENTIAL**Kertas soalan ini SULIT sehingga peperiksaan kertas ini tamat. SULIT*

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    CONFIDENTIAL* 4 964/1

    964/1 [Turn over*This question paper is CONFIDENTIAL until the examination is over. CONFIDENTIAL*

    1 Which statement correctly describes the property of water?

    A A relatively large amount of energy is needed to increase its temperature

    B At normal room temperatures, its molecules are bound together by ionic bonds

    C The highest density of water occurs below its freezing point

    D Water acts as a solvent for non-polar molecules

    2 A sequence of amino acids may end in either an amino group (-NH 2) or a carboxylgroup (-COOH). What is the theoretical number of chemically different dipeptides that

    may be assembled from 20 different amino acids?

    A 80

    B 160

    C 190

    D 400

    3 Which of the following organelles is the origin of the other membranes in the cell?

    A Vacuole

    B Nucleus

    C Lysosome

    D Smooth endoplasmic reticulum

    4 The diagram below shows a number of specialised cells from plant and animal tissues.

    Which cells provide mechanical support?

    A P, Q, R

    B P, Q, S

    C P, R, S

    D Q, R, T

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    SULIT* 5 964/1

    964/1 [Lihat sebelah

    *Kertas soalan ini SULIT sehingga peperiksaan kertas ini tamat SULIT*

    1 Pernyataan manakah yang betul menerangkan sifat air?

    A Kuantiti tenaga yang besar diperlukan untuk meningkatkan suhu air

    B Pada suhu normal bilik, molekul terikat bersama dengan ikatan ionik

    C Ketumpatan air adalah tinggi berlaku di bawah sejuk beku

    D Air bertindak sebagai pelarut bagi molekul tidak berkutub

    2 Jujukan asid amino berakhir samada pada kumpulan amino (-NH2) atau kumpulankarboksil (-COOH). Secara teorinya, berapakah bilangan dipeptida berbeza yang

    berbeza secara kimia mungkin terbentuk daripada 20 asid amino yang berlainan?

    A 80

    B 160

    C 190

    D 400

    3 Antara organel berikut, yang manakah asal usul membran lain di dalam sel?

    A Vakuol

    B Nukleus

    C Lisosom

    D Jalinan endoplasma licin

    4 Gambarajah di bawah menunjukkan beberapa sel khusus daripada tisu-tisu tumbuhandan haiwan.

    Yang manakah sel yang menyediakan sokongan secara mekanikal?

    A P, Q, R

    B P, Q, S

    C P, R, S

    D Q, R, T

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    5 What is the advantage of DNA having two complementary strands?

    A Pairing can occur between chromatids

    B Transcription and replication can occur stimultaneously

    C Semi-conservative replication is possible

    D Diploid cells can inherit DNA from both parents

    6 The graph below shows Lineweaver-Burk plot of a reaction which is catalysed by anenzyme with and without the presence of substanceX.

    SubstanceXis

    A an enzyme cofactor

    B a metabolic poison

    C a competitive inhibitor

    D a non-competitive inhibitor

    7 Which of the following about cyclic photophosphorylation and non-cyclicphotophosphorylation is correct?

    Cyclic Non-cyclic Cyclic and non-cyclic

    photophosphorylation photophosphorylation photophosphorylation

    A Oxygen is produced ATP is produced NADPH is not formed

    B NADPH is not formed Oxygen is produced ATP is produced

    C ATP is produced Oxygen is produced NADPH is not formed

    D NADPH is not formed ATP is produced Oxygen is produced

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    5 Apakah kebaikan DNA mempunyai dua bebenang pelengkap?

    A Pasangan boleh berlaku di antara kromatid

    B Transkripsi dan replikasi boleh berlaku secara serentak

    C Replikasi semi konservatif boleh berlaku

    D Sel diploid boleh mewarisi DNA daripada kedua-dua induk

    6 Graf di bawah menunjukkan plot Lineweaver-Burk bagi satu tindakbalas yangdimangkinkan oleh enzim dengan atau tanpa kehadiran bahan X.

    Bahan X merupakan

    A kofaktor enzim

    B racun metabolic

    C perencat persaingan

    D perencat bukan persaingan

    7 Antara yang berikut, yang manakah yang betul tentang pemfotofosforilan kitar dan

    pemfotofosforilan bukan kitar?

    Pemfotofosforilan Pemfotofosforilan Pemfotofosforilan

    kitar bukan kitar kitar dan bukan kitar

    A Oksigen dihasilkan ATP dihasilkan NADPH tidak terbentuk

    B NADPH tidak terbentuk Oksigen dihasilkan ATP dihasilkanC ATP dihasilkan Oksigen dihasilkan NADPH tidak terbentuk

    D NADPH tidak terbentuk ATP dihasilkan Oksigen dihasilkan

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    8 In the cytoplasm of a leaf cell for CAM plant, carbon dioxide is fixed at night to form asubstance. This substance must be stored in the cell vacuole until day time because it

    A will affect the pH of the cell cytoplasm

    B dissolves quickly and will diffuse out from the cell

    C is osmotically active and must be separated

    D must be activated by enzymes in the cell vacuole

    9 The main purpose of the Krebs cycle is to produce

    A carbon dioxide

    B oxaloasetic acid

    C reduced electron carriers

    D water from the combination of oxygen and hydrogen

    10 Which of the following statements are true about respiration?

    I The Krebs cycle involves decarboxylation and dehydrogenation

    II Glycolysis causes the removal of hydrogen from substrate

    III In the electron transport system, oxygen is reduced to water

    IV During the conversion of pyruvic acid to acetyl coenzyme A, CO2 is

    released and NADH is formed

    A I and II

    B I, III and IV

    C II, III and IV

    D I, II, III and IV

    11 The maximum tidal volume during forced breathing is called

    A vital capacity

    B inspiratory capacity

    C residual volume

    D inspiratory reserve volume

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    8 Dalam sitoplasma sel daun bagi tumbuhan CAM, karbon dioksida diikat pada waktumalam menjadi suatu bahan. Bahan itu perlu disimpan di dalam vakuol sel hingga

    waktu siang kerana bahan itu

    A akan member kesan kepada pH sitoplasma sel

    B cepat larut dan meresap keluar dari sel

    C aktif secara osmosis dan mesti diasingkan

    D perlu diaktifkan oleh enzim di dalam vakuol sel

    9 Tujuan utama kitar Krebs adalah untuk menghasilkan

    A gas karbon dioksida

    B asid oksaloasetik

    C pembawa elektron terturun

    D air daripada gabungan oksigen dan hidrogen

    10 Antara penyataan berikut, yang manakah yang benar tentang respirasi?

    I Kitar Krebs melibatkan pendekarboksilan dan pendehidrogenan.

    II Glikolisis menyebabkan penyingkiran hidrogen daripada substrat

    III Dalam sistem pengangkutan elektron, oksigen diturunkan kepada air

    IV Semasa pertukaran asid piruvik kepada asetil koenzim A, CO2

    dibebaskan dan NADH dibentuk

    A I dan II

    B I, III dan IV

    C II, III dan IV

    D I, II, III dan IV

    11 Isipadu tidal yang maksimum ketika pernafasan paksaan disebut

    A muatan vital

    B muatan inspirasi

    C isipadu residu

    D isipadu inspirasi simpanan

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    12 Which of the following factors is the most effective in accelerating the rate ofbreathing in a mammal?

    A A lack of oxygen in the blood

    B A lack of oxygen in the alveoli of the lungs

    C An excess of carbon dioxide in the blood

    D An excess of carbon dioxide in the lungs

    13 The