This question paper consists of two sections: Section A and Section B. Kertas soalan soalan ini mengandungi mengandungi dua bahagian: Bahagian A dan Bahagian B. Section A Bahagian A [60 marks / markah] markah]
Answer all questions in this section. Jawab semua soalan dalam bahagian ini.
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Diag Diagra ram m 1 sho shows ws an ani anima mall cell cell..
Rajah 1 menunjukkan menunjukkan satu satu sel haiwan. haiwan.
Diagram 1 / Rajah / Rajah 1 (a) Based on the given given model, model, identify the cell components components labelled labelled P, Q, R and S. Berdasarkan pada model model yang diberi, diberi, kenal pasti pasti komponen komponen sel berlabel berlabel P, P, Q, R, dan S. [4 marks/ marks/markah] markah] (b) (i) On Diagram Diagram 1, label label a cell cell component component which has the the following following properties. properties. Pada Rajah Rajah 1, labelkan labelkan komponen komponen sel yang mempunyai mempunyai ciri-ciri berikut. berikut. • It is a rod-shaped organelle with two membranes. Organel berbentuk rod dengan dua membran. • Its size ranges from 1 to 10 μm. Saiznya berukuran di antara 1 hingga 10 μm. [1 mark /markah] markah] (ii) What is the the function function of the cell cell component component labelled labelled in (b)i? Apakah fungsi fungsi komponen komponen sel yang yang dilabel di di (b)i? _________ _____________ ________ _________ __________ _________ ________ _________ __________ _________ ________ _________ __________ ________ ___ [2 mark /markah] markah]
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(iii) It is found that a human human male sex cell has a larger number of the organelle labelled in (b)i. than a human somatic cell. Give an explanation for this. Didapati bahawa bahawa sel Cancel seks seks jantan Download manusia manusia mempunyai mem bilangan organel organel yang Andpunyai Print bilangan berlabel di (b)i. yang (b)i. yang banyak berbanding sel soma manusia. Berikan Berikan penerangan penerangan tentang hal ini. ini. _________ _____________ ________ _________ __________ _________ ________ _________ __________ _________ ________ _________ __________ _________ ____ _________ _____________ ________ _________ __________ _________ ________ _________ __________ _________ ________ _________ __________ _______ __ [2 marks/ marks/markah] markah] (c) Based on your your answer answer in (a), Berdasarkan pada jawapan jawapan kamu di (a), berlabel S. (i) suggest suggest the function function of the part labelled labelled S. cadangkan fungsi struktur berlabel S. __________ _______________ _________ ________ _________ __________ _________ ________ _________ __________ _________ ________ _________ _______ __ [1 mark /markah] markah] (ii) name the component in S that helps to conduct conduct the function which you have suggested in (c)i. nyatakan komponen dalam S yang membantu membantu untuk menjalankan menjalankan fungsi fungsi yang kamu kamu cadangkan di (c)i. __________ _______________ _________ ________ _________ __________ _________ ________ _________ __________ _________ ________ _________ _______ __ [1 mark /markah] markah] (d) Name the process whereby unspecialised cells become specialised for particular functions. Namakan proses proses dimana dimana sel yang tidak spesifik menjadi menjadi spesifik bagi fungsi fungsi yang tertentu. _________ _____________ _________ __________ __________ __________ _________ ________ _________ __________ _________ ________ _________ _________ ____ [1 mark /markah] markah] (e) Give an example example of the process which which you have named named in (d). Berikan satu contoh proses proses yang kamu namakan namakan di (d). _________ _____________ _________ __________ __________ __________ _________ ________ _________ __________ _________ ________ _________ _________ ____ [1 mark /markah] markah] 2. A green mustard mustard stem is cut longitudinall longitudinally y into four equal strips as shown shown in Diagram Diagram 2. Batang sawi sawi dipotong dipotong secara menegak menegak kepada kepada empat jaluran jaluran yang sama sama saiz seperti seperti dalam Rajah 2.
Diagram 2 / Rajah / Rajah 2 Three of the strips are placed in solutions X, Y and Z respectively. Tiga daripada jaluran tersebut diletakkan di dalam larutan X, Y dan Z secara individu individu..
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Below are the results obtained from this experiment. Berikut merupakan merupakan keputusan keputusan yang diperolehi diperolehi daripada daripada eksperimen eksperimen ini. Cancel Download And Print Solution X Y Z Larutan Shape of the strip Bentuk jaluran jaluran (a)What are solutions X, Y and Z used in this experiment? Apakah larutan larutan X, Y dan Z yang digunakan digunakan dalam eksperimen ini ini? i. Solu Soluti tion on X: Larutan X: _________ ______________ __________ __________ _________ ________ _________ __________ _________ ________ _________ __________ _________ _________ ______ _ [1 mark/markah mark/markah]] ii Solu Soluti tion on Y: Larutan Y: _________ ______________ __________ __________ _________ ________ _________ __________ _________ ________ _________ __________ _________ _________ ______ _ [1 mark/markah mark/markah]] iii Solution Z: Larutan Z: . _________ ______________ __________ __________ _________ ________ _________ __________ _________ ________ _________ __________ _________ _________ ______ _ [1 mark/markah mark/markah]] (b)Identify solutions X, Y and Z. Kenalpasti larutan X,Y dan Z. i. Solution X: Larutan X: __________ _______________ _________ ________ _________ __________ _________ ________ _________ __________ _________ _________ _________ _________ ______ _ [1 mark/markah mark/markah]] ii. ii. Solu Soluti tion on Y: Y: Larutan Y: __________ _______________ _________ ________ _________ __________ _________ ________ _________ __________ _________ _________ _________ _________ ______ _ [1 mark/markah mark/markah]] iii. Solutio Solution n Z: Larutan Z: __________ _______________ _________ ________ _________ __________ _________ ________ _________ __________ _________ _________ _________ _________ ______ _ [1 mark/markah mark/markah]] (c)Describe the condition of the strips that are immersed in the following solutions. Terangkan keadaan jaluran yang direndam dalam larutan berikut : i. Solution X: Larutan X: __________ _______________ _________ ________ _________ __________ _________ ________ _________ __________ _________ _________ _________ _________ _______ __ [1 mark/markah mark/markah]] ii. ii. Solu Soluti tion on Z: Larutan Z : __________ _______________ _________ ________ _________ __________ _________ ________ _________ __________ _________ _________ _________ _________ _______ __ [1 mark/markah mark/markah]] (d)i. (d)i. Expla Explain in you yourr answ answer er in in (c)i. (c)i. Jelaskan Jelaskan jawapan jawapan anda di (c)i. __________ _______________ _________ ________ _________ __________ _________ ________ _________ __________ _________ _________ _________ _________ ________ ___
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[2 marks/markah marks/markah]]
Jelaskan jawapan jawapan anda di (c)ii. ii. Explain Explain your your answe answerr in (c)ii. (c)ii. Jelaskan __________ _______________ _________ ________ _________ __________ _________ ________ _________ _________ _________ _________ ________ ___ Cancel Download And__________ Print_________ [2 marks/markah marks/markah]] 3.Diagram 3 shows the action of an enzyme on a substrate. Rajah 3 menunjukkan menunjukkan tindakan tindakan suatu enzim enzim terhadap substrat.
Diagram 3 / Rajah / Rajah 3 (a) What does X in Diagram 3 represent? Apakah yang yang diwakili oleh X pada Rajah 3? _________ _____________ ________ _________ __________ _________ ________ _________ __________ _________ ________ _________ __________ _________ ________ _______ ___ [1 mark /1 /1 markah] markah] (b)State two properties properties of enzymes enzymes which are shown shown in Diagram above. above. Nyatakan dua sifat enzim yang ditunjukkan ditunjukkan pada Rajah Rajah di atas. 1. _______________________________ _____________________________________________ _______________________________ ___________________________ __________ 2. _______________________________ _____________________________________________ _______________________________ ___________________________ __________ [2 marks/2 marks/2 markah] markah]
(c)State two other properties of enzymes which are not shown in Diagram 5. Nyatakan dua lagi sifat enzim yang tidak ditunjukkan pada Rajah5. Rajah 5. 1. _______________________________ _____________________________________________ _______________________________ ___________________________ __________ 2. _______________________________ _____________________________________________ _______________________________ ___________________________ __________ [2 marks/2 marks/2 markah] markah] (d)The explanation of the action of an enzyme on a substrate as shown in Diagram 3 above is based on a hypothe hypothesis. sis. What What is this hypothesis hypothesis called? Huraian tentang tentang tindakan tindakan suatu enzim terhadap substrat substrat seperti yang yang ditunjukkan ditunjukkan pada Rajah 3 di di atas adalah berdasarkan berdasarkan pada satu hipotesis. hipotesis. Apakah hipotesis itu? itu? _________ _____________ ________ _________ __________ _________ ________ _________ __________ _________ ________ _________ __________ _________ ________ _______ ___
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[1 mark /1 /1 markah] markah] (e) Diagram 4 is a graph graph which shows the effect of temperature on the rate of a reaction catalysed by pepsin. pepsin. Rajah 4 ialah ialah satu graf yangCancel menunjukkan menunjukkan kesan suhu kadar kadar tindak balas balas yang Download And terhadap Print dimangkinkan dimangkinkan oleh pepsin.
Diagram 4 / Rajah / Rajah 4 (i) What is is the temperature, temperature, t, which is shown shown in Diagram Diagram 4? Apakah suhu, t, yang ditunjukkan pada pada Rajah 4? __________ _______________ _________ _________ _________ _________ __________ __________ __________ _________ ________ _________ __________ _________ _____ _ [1 mark /1 /1 markah] markah] (ii) Explain your answer answer in (e)(i). Huraikan jawapan jawapan anda di (e)(i). __________ _______________ _________ _________ _________ _________ __________ __________ __________ _________ ________ _________ __________ _________ _____ _ [1 mark /1 /1 markah] markah] (iii) Why is there no reaction reaction at 60°C? Mengapakah Mengapakah tiada tindak balas pada suhu suhu 60°C? __________ _______________ _________ _________ _________ _________ __________ __________ __________ _________ ________ _________ __________ _________ _____ _ [1 mark /1 /1 markah] markah] (f) Pepsin is found in the gastric juice which is secreted by the stomach. What is the optimum optimum pH for the action of pepsin? Pepsin ditemui ditemui dalam jus gaster yang yang dirembes dirembes oleh perut. perut. Apakah pH optimum bagi tindakan pepsin? _________ _____________ ________ _________ __________ _________ ________ _________ __________ _________ ________ _________ __________ _________ ________ _______ ___ [1 mark /1 /1 markah] markah]
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4.Diagram 5 shows a cell cycle with four major phases, J, K, L and M. Rajah 5 menunjukkan satu kitar sel dengan empat fasa utamanya, J, K, L, dan M. Cancel Download And Print
Diagram 5 / Rajah / Rajah 5 (a)i. (a) i. State the the phases phases for interphas interphase. e. Nyatakan Nyatakan fasa-fasa fasa-fasa bagi interfasa. _________ _____________ ________ _________ __________ _________ ________ _________ __________ _________ ________ _________ __________ _________ ________ _____ _ [3 mark /markah] markah] ii.Name phases J, K and L. Namakan fasa-fasa fasa-fasa J, K, dan L. J: _________ _____________ ________ _________ __________ _________ ________ _________ __________ _________ ________ _________ __________ _________ _______ ___ K: _________ _____________ ________ _________ __________ _________ ________ _________ __________ _________ ________ _________ __________ _________ _______ ___ L: _________ _____________ ________ _________ __________ _________ ________ _________ __________ _________ ________ _________ __________ _________ _______ ___ [3 marks/ marks/markah] markah] (b)Stages I, II, III and IV are included in the M-phase. Match the stages with the descriptions. Peringkat I, Peringkat I, II, III, dan IV terdapat dalam fasa M. Padankan M. Padankan peringkat-pering peringkat-peringkat kat ini dengan dengan penerangannya. penerangannya.
[4 marks/ marks/markah] markah]
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(c)Diagram 6 shows stage V which occurs in a plant cell. Rajah 6 menunjukkan peringkat V peringkat V yang berlaku berlaku dalam sel sel tumbuhan. Cancel Download And Print
i. Name st stage V. V.
Diagram 6 / Rajah / Rajah 6 Namakan peringkat V. peringkat V.
__________ _______________ _________ ________ _________ __________ _________ ________ _________ __________ _________ _________ _________ _________ ________ ___ [1 mark /markah] markah] ii. Based on on Diagram Diagram 6 explain explain how how stage stage V occurs occurs in a plant cell. cell. Berdasarkan Rajah 6, terangkan bagaimana peringkat V peringkat V berlaku dalam sel tumbuhan. __________ _______________ _________ ________ _________ __________ _________ ________ _________ __________ _________ _________ _________ _________ ________ ___ __________ _______________ _________ ________ _________ __________ _________ ________ _________ __________ _________ _________ _________ _________ ________ ___ [3 marks/ marks/markah] markah] 5.Diagram 7 below shows four stages of mitosis in an animal cell. Rajah 7 menunjukkan menunjukkan empat empat peringkat peringkat mitosis mitosis di dalam sel sel haiwan.
Diagram 7 / Rajah / Rajah 7 (a)i. (a) i. Arrange the stages stages in Diagram Diagram 7 according according to the correct sequence sequence of the mitotic mitotic process. process. Susun peringkat pada Rajah 7 mengikut susunan peringkat peringkat mitosis yang betul.
[1 mark/markah mark/markah]] ii. Name Name the stages stages label labelled led W to Z. Z. Namakan peringkat peringkat yang dilabel sebagai sebagai W hingga Z. W: ________________________________ ______________________________________________ ________________________________ _______________________ _____ X: ________________________________ ______________________________________________ ________________________________ _______________________ _____ Y: ________________________________ ______________________________________________ ________________________________ _______________________ _____ Z: ________________________________ ______________________________________________ ________________________________ _______________________ _____ 7
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[2 marks/markah marks/markah]]
(b)Name the type of cells in humans where mitosis takes place. Namakan jenis jenis sel di dalam dalam manusia manusia yang berlakunya berlakunya mitosis mitosis.. Cancel Download And Print __________ _______________ _________ ________ _________ __________ _________ ________ _________ __________ _________ ________ _________ __________ _________ ______ __ [1 mark/markah mark/markah]] (c)Give three examples of cells named in (b). Berikan tiga contoh sel yang dinamakan di (b). 1. ______________________________ ______________________________________________ ________________________________ ___________________________ ___________ 2. _____________________________ _____________________________________________ ________________________________ ____________________________ ____________ 3. ______________________________ _____________________________________________ ________________________________ ____________________________ ___________ [3 marks/markah marks/markah]] (d)Give two significance of mitosis.
Berikan dua kepentingan mitosis. mitosis.
1.__________________________________ 1.___________________ ________________________________ _______________________________ _______________________ _________ 2.__________________________________ 2.___________________ ________________________________ _______________________________ _______________________ _________ [4 marks/markah marks/markah]]
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Section B Bahagian B [40 marks / markah] markah ] Print Cancel Download And
Answer any two questions from this section. Jawab mana-mana mana-mana dua soalan daripada daripada bahagian ini. 6.
(a)(i)What is an enzyme? Apakah enzim? enzim? [2 marks/2 markah] markah] (ii)Discuss the general characteristics of enzymes. Bincangkan ciri-ciri umum umum enzim. enzim. [8 marks/8 markah] markah] (b) Explain how enzymes are synthesised in the cells. Terangkan bagaimana enzim disintesis di dalam sel. [10 marks/10 markah] markah]
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Diagram 8 shows three different types of cells. Rajah cells. Rajah 8 menunjukkan tiga jenis sel sel .
Diagram 8 / Rajah / Rajah 8 (a) i. Name Name the the cells cells label labelled led X, X, Y and and Z in Diag Diagram ram 8 above. above. Namakan sel - sel yang yang berlabel X, berlabel X, Y dan Z dalam Rajah 8 di atas. atas. [3 marks/markah marks/markah]] ii. State the functions functions of the the cells labelled labelled X, X, Y and Z in Diagram Diagram 8. Nyatakan fungsi fungsi - fungsi fungsi sel yang berlabel berlabel X, X, Y dan Z dalam Rajah 8. 8. [3 marks/markah marks/markah]] (b) Using the cells given above, describe the process of cell organisation until it reaches the formation of a complete multicellular organism. Dengan menggunak menggunakan an sel - sel yang yang diberikan diberikan di atas, jelaskan jelaskan proses proses organisasi organisasi sel hingga ke peringkat organisma multiselular yang lengkap. lengkap. [14 marks/markah marks/markah]]
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Diag Diagram ram 9 sho shows ws a red red bloo blood d cell cell.. Rajah 9 menunjukkan menunjukkan sel sel darah merah. merah.
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Diagram 9 / Rajah / Rajah 9 (a) What is the the function function of red blood blood cells? cells? Apakah fungsi fungsi sel darah merah? merah? [1 mark /1 /1 markah] markah] (b) Explain what what happens when when red blood cells are immersed in... Huraikan apa apa yang berlaku berlaku apabila sel darah merah direndam dalam... dalam... (i) a hypot hypoton onic ic solu solutio tion, n, larutan hipotonik, [3 marks/3 marks/3 markah] markah] (ii) an isotonic isotonic solution, solution, larutan isotonik, [3 marks/3 marks/3 markah] markah] (iii)a hypertonic solution. larutan hipertonik. [3 marks/3 marks/3 markah] markah] (c) Diagram 10 10 shows shows a plant cell. cell. Rajah 10 menunjukkan menunjukkan sel sel tumbuhan. tumbuhan.
Diagram 10 / Rajah / Rajah 10 Explain what happens when plant cells are immersed in... Huraikan apa apa yang berlaku berlaku apabila sel tumbuhan direndam direndam dalam... dalam... (i) a hypot hypoton onik ik sol solut utio ion, n, larutan hipotonik , [4 marks/4 marks/4 markah] markah] (ii) an isotonik isotonik solution, solution, larutan isotonik, [2 marks/2 marks/2 markah] markah] (iii)a hypertonik solution. larutan hipertonik. [3 marks/3 marks/3 markah] markah] (d) Why do red blood cells and plant cells behave differently when they are immersed in a hypotonic solution? Mengapakah Mengapakah sel merah merah darah dan sel sel tumbuhan berkelakuan berkelakuan berbeza berbeza apabila direndam dalam larutan hipotonik? [1 mark /1 /1 markah] markah] 9.
(a)
Water is an important inorganic compound. Air adalah penting penting bagi sebatian bukan organik 10
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Explain the importance of water in cells. Terangkan kepentingan kepentingan air di dalam sel . first need to download it. [8 marks/markah marks/markah]] (b) (b) i. Descr Describe ibe the the stru structu cture re of of nucle nucleic ic acid acid.. Terangkan struktur asid nukleik . [10 marks/markah marks/markah]] Cancel Download And Print ii. State two importances of nucleic acids in cells. Nyatakan dua kepentingan asid nukleik di dalam sel . [2 marks/markah marks/markah]]
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