BIOT445R

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Hak cipta PPMP BIO Johor 2013 1

PANEL PERUNDING MATA PELAJARAN BIOLOGI JOHOR

PLAN J

SOALAN ARAS RENDAH

BIOT445R

TOPIK : KOMPOSISI KIMIA DALAM SEL

SUBTOPIK : ENZIM

SOALAN OBJEKTIF:

1. The Figure 1 shows the mechanism of enzyme action.

Rajah 1 menunjukkan mekanisme tindakan enzim.

Figure 1

What does P represent?

Apakah yang diwakili oleh P?

A Enzyme

Enzim

B Substrate

Substrat

C Enzyme-substrate complex

Kompleks enzim-substrat

D Products of the reaction

Hasil tindakbalas

2. A small amount of enzymes can act on a large amount of substrate because

Jumlah enzim yang sedikit dapat bertindak ke atas jumlah substrat yang besarkerana

A enzymes do not change after a reaction and can be used again.

Enzim tidak berubah selepas tindakbalas dan boleh digunakan semula.

B a little enzyme can supply enough energy to carry out a reaction.

Sedikit enzim dapat memberikan tenaga yang mencukupi untuk melakukantindakbalas.

C as the reaction is going on, more enzymes are produced.

Selagi tindakbalas berlaku, lebih enzim akan dihasilkan.

D enzymes act in an all or none situation.

Enzim bertindak dalam semua keadaan.

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SOALAN ARAS RENDAH

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3. In the production of leather goods, what enzyme is used to remove the fur from theskin of animals?

Dalam penghasilan barangan kulit, enzim apakah yang digunakan untukmengasingkan bulu haiwan daripada kulitnya?

A Amylase

B Lipase

C Protease

D Cellulase

4. Figure 2 shows the working mechanism of an enzyme.

Rajah 2 menunjukkan mekanisme tindakan suatu enzim.

Figure 2

What property does this enzyme illustrate?

Ciri apakah yang ditunjukkan oleh enzim ini?

A Enzyme reaction is specific

Tindakbalas enzim adalah spesifik.

B Enzyme reaction is reversible

Tindakbalas enzim adalah berbalik.

C Enzyme structure changes after reaction

Struktur enzim berubah selepas tindakbalas.

D Enzyme reaction is affected by temperature.

Tindakbalas enzim dipengaruhi oleh suhu.

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SOALAN ARAS RENDAH

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5. Which of the following statements about all enzymes is not true?

Di antara pernyataan berikut yang manakah yang t i d a k benar?

A They are made of protein.

Mereka diperbuat dari protein.

B They are not affected by heat.

Mereka tidak dipengaruhi oleh suhu.

C They alter the rate of chemical reactions.

Mereka mengubah kadar sesuatu tindakbalas kimia.

D They remain unchanged at the end of the reaction.

Mereka kekal tidak berubah di akhir suatu tindakbalas.

6. The correct statement about intracellular enzymes is

Pernyataan yang benar mengenai enzim intrasel ialah

A they are produced by lysosomes

Mereka dihasilkan oleh lisosom

B they are produced and function in the same cell

Mereka dihasilkan dan berfungsi dalam sel yang sama

C they are involved in the hydrolysis of food

Mereka terlibat dalam pencernaan makanan

D they work outside of a cell

Mereka bekerja di luar sesuatu sel.

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7. The diagram shows the action of an enzyme on a substrate.

Rajah menunjukkan tindakan suatu enzim terhadap substrat.

X represents

X mewakili

A enzyme C product of reaction

enzim hasil tindakbalas

B substrate D enzyme-substrate complex

s ubstrat kompleks enzim-substrat

8. The following statements is true about the characteristics of enzymes except

Pernyataan berikut adalah benar mengenai ciri-ciri enzim k e c u a l i

A enzymes are denatured at temperatures higher than 60C.

Enzim ternyahasli pada suhu lebih dari 60C.

B enzymes increase the rate of chemical reactions

Enzim meningkatkan kadar tindakbalas kimia.

C enzyme reactions are reversible

Tindakbalas enzim adalah berbalik

D all enzymes function efficiently at neutral conditions

Semua enzim berfungsi dengan efisien dalam keadaan neutral.

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9. The table shows the substrate and optimum pH of four digestive enzymes A, B, C and D.

Jadual menunjukkan substrat dan pH optimum bagi empat enzim pencernaan A, B, C danD.

Which of the enzymes A, B, C, or D is rennin?

Yang manakah di antara A, B, C dan D ialah renin?

Enzymes

Enzim

Substrate

Substrat

Optimum pH

pH optimum

A

B

C

D

Starch

Kanji

Protein

Protein

Fat

Lemak

Protein and polypeptide

Protein dan polipeptida

6.8

2.2

8.5

8.5

10. The figure shows the breaking down of a complex molecule by an enzyme. Which of themolecules A, B, C or D, represent the substrate?

Rajah menunjukkan penguraian molekul kompleks oleh suatu enzim. Yang manakah diantara molekul A, B, C dan D yang mewakili substrat?

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11. Diagram 4 shows an illustration to describe the lock and key hypothesis inthe enzyme reaction.

Rajah 4 menunjukkan suatu ilustrasi untuk menunjukkan hipotesis kunci danmangga dalam tindakbalas enzim.

DIAGRAM 4

Which of the following represents P, Q and R?

Yang manakah mewakili P, Q dan R?

P Q R

ASubstrate

Substrat

Enzyme

Enzim

Product

Hasil

BProduct

Hasil

Substrate

Substrat

Enzyme

Enzim

C Enzyme SubstrateSubstrat

ProductHasil

DProduct

Hasil

Enzyme

Enzim

Substrate

Substrat

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12. Which of the following is true about enzymes?

Antara berikut yang manakah b e n a r tentang enzim?

A. Enzymes are not specific

Enzim adalah tidak spesifik

B. Enzymes cannot be destroyed

Enzim tidak dapat dimusnahkan

C. Enzymes are needed in big quantities

Enzim diperlukan dalam kuantiti yang banyak.

D. Enzymes are synthesized in the ribosomes.

Enzim disintesis di dalam ribosom.

13.Graph below shows the effect of pH on the activities of different enzyme.Graf di bawah menunjukkan kesan pH keatas aktiviti enzim yang berbeza.

Which of the enzyme might be P, R and S?

Enzim yang manakah berkemungkinan P,R dan S?

P R S

A Salivary amylase

Amilase liur

Trypsin

Tripsin

Pepsin

Pepsin

B Trypsin

Tripsin

Salivary amylase

Amylase liur

Pepsin

Pepsin

C Pepsin

Pepsin

Salivary amylase

Amylase liur

Trypsin

Tripsin

D Pepsin

Pepsin

Trypsin

Tripsin

Salivary amylase

Amylase liur

Kadar tindakbalas

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13. Which of the following is true about the enzyme and its function?

Yang manakah antara berikut benar mengenai enzim dan fungsinya?

Enzyme

Enzim

Function

Fungsi

ARennin

Renin

Coagulates milk

Menggumpalkan susu

BPepsin

Pepsin

Emulsifies fat

Mengemulsikan lemak

CTrypsin

Tripsin

Digest fat

Mencerna lemak

DSucrase

Sukrase

Hydrolyses fat

Menghidrolisis lemak

14. Enzyme need an optimum temperature for its reaction. Which one is the most suitabletemperature for enzymes reaction in human body?

Enzim memerlukan suhu yang optimum bagi melakukan tindakbalasnya. Antara berikut,yang manakah suhu yang paling sesuai bagi tindakbalas enzim di dalam tubuh manusia?

A. 30C C. 37C

B. 45C D. 60C

SOALAN STRUKTUR:

1.Fill in the blanksIsi tempat kosong

substratesubstrat

Enzymeenzim

Productshasil

___________________

Lactase Glucoce+________________

sucrose

___________________

Glucose + Fructose

___________________

Maltase Glucose + glucose

( 3 MARKAH)

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PLAN J

SOALAN ARAS RENDAH

BIOT445R

SOALAN ESEI:

1. Diagram 1 shows the mechanism of enzyme action.

Rajah 1 menunjukkan mekanisma tindakan enzim

(i) Based on the diagram 1, deduce what the enzyme is?

Berdasarkan Rajah 1, rumuskan apakah makna enzim?

(ii) Explain the mekanisme of enzyme reaction

Terangkan mekanisme tindak balas enzim

2. Explain the uses of enzymes in the daily life and industry using example.

Terangkan kegunaan enzim dalam kehidupan harian dan industri menggunakan

contoh.

BIOT445R

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