Module 2

Perfect score SBP Biology  2009 

BAHAGIAN SEKOLAH BERASRAMA PENUH DAN SEKOLAH KLUSTER KEMENTERIAN PELAJARAN MALAYSIA

PERFECT  SCORE  BIOLOGY 

 

2009

MODUL II

ESSAY  QUESTIONS 

Student’s Copy DISEDIAKAN OLEH: 1. 2. 3. 4. 5. 6.

Puan Hasimah binti Azit – Sekolah Seri Puteri, Cyberjaya Puan Natrah binti Mohamad – SMA Persekutuan Kajang Puan Mardiana binti Yusof – SMS Hulu Selangor Puan Sarah Safarina binti Sabri- Kolej Islam Sultan Alam Shah Puan Kamariah binti Zailan – SMA Persekutuan Labu Puan Siti Asma binti Radzali 7. Puan Noorsyamsinar binti Kasim

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Perfect score SBP Biology  2009 

Question 1: Diagram 1 shows a reaction catalyzed by sucrase.

N Q

M

P (a) Based on Diagram 1, explain the characteristics of an enzyme. (6 marks)

(b) Enzymes are widely used in our daily life and industries. Based on the above statement, explain how enzymes are used in the food industry. [4 marks]

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Perfect score SBP Biology  2009  Question 2: A study is carried out on two individuals X and Y. They asked to drink glucose solution of the same volume and concentration. The glucose and insulin level in the blood is measured. The graph in Diagram 2 shows the changes in concentration of glucose and insulin in the blood of individuals X and Y. The concentration of glucose in a normal individual is 0.09 gdm-3

(a)

Explain the differences between the graph of individuals X and Y in relation to: (i)

blood glucose concentration

(ii)

insulin concentration in the blood

[10 marks]

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Perfect score SBP Biology  2009  Question 3: Diagram 3 shows the longitudinal section through the thorax of a man.

Diagram 3 Describe briefly the mechanism of breathing in man. In your answer describe the part played by the (i) diaphragm (ii) intercostal muscle (iii) alveoli (10 marks)

Question 4: Why do we need to practice good posture? Explain how we can practice good postures while standing, sitting, walking and lifting heavy objects. [10 marks]

Question 5: Reproduction technology has contributed a lot to human health and population growth. Describe how fertility is overcome in humans using the following methods: • • • •

Sperm banking Artificial insemination In vitro fertilization Surrogate mother

[10 marks]

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Perfect score SBP Biology  2009  Question 6 The figure below shows a fluid mosaic model of the plasma membrane

(a)

Explain the functions of the structures X, Y and Z in the movement of substances across the plasma membrane [4 marks]

(b)

All movements of substances have to pass through a plasma membrane. Explain why the plasma membrane is known as a semi permeable membrane (6 marks)

Question 7: (a) Explain how the first line of defence can prevent the entry of pathogens into the body [6 marks]

(b) Explain the effect of taking fatty foods that have high cholesterol content to human healthy life. [4 marks]

Question 8: (a) Explain the principle involved in genetic engineering [2 marks]

(b) Discuss the importance of genetic engineering in the medical and agricultural field. [4 marks]

(c) Diagram 8 shows DNA finger printing. DNA finger printing is more scientific, accurate and advanced compared to the thumbprint in criminal investigation.

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Perfect score SBP Biology  2009 

Discuss the use of DNA fingerprinting in the identification of the parents of a child. Based on your answer, identify the father of the child. [4 marks]

Question 9:

Diagram 9 shows organism, P, Q and R.

P

Q

R

Diagram 9 (a) (i) Describe the type of nutrition in P and Q. [4 marks]

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Perfect score SBP Biology  2009  (ii) Explain one similarity and four differences between the alimentary canal of Q and R. [6 marks] Question 10 Pregnant mother, infants and teenager require different energy daily. Each target group needs to choose a diet appropriate to its needs. Based on your biological knowledge discuss the above statement. [10 marks]

Question 11: The diagram shows a human activity.

a)

Explain briefly why humans carry out the activity as shown in diagram above. [4 marks ]

b)

Explain the important ecological roles of the tropical rainforest. [6 marks]

c)

i) Explain the impacts of the activity shown above on the environment. [7 marks] ii) Suggest methods to control the mentioned activity. [3 marks]

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Perfect score SBP Biology  2009  Question 12:

Activities that carried out by the human to provide food, power and industrial needs have a extensive effects on the environment. These effects include atmospheric pollution, water pollution, destruction of habitats and communities and a natural phenomenon known as the greenhouse effect.

d) Explain the fenomena of greenhouse effect and problems caused by this fenomena. ( 10 marks ) e) Suggest two measures which can be employed in the management of development activities and the ecosystem to ensure that the balance of nature is maintained. ( 10 marks )

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Perfect score SBP Biology  2009  Question 13: (a)

The shaded area of the graph in Diagram1 shows the intake of oxygen by an athlete before, during and after running for five minutes.

Oxygen consuption 0.7 (litre per minute) 0.6 0.5

0.4 0.3 0.2

0.1 0.0 0

5

10

20

15

25 Time (minutes)

Period of running Key Oxygen demand Oxygen consumption

Based on the graph , explain how an oxygen debt is built up when an athlete is running and how it is settled after he stops running. [ 10 marks ]

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Perfect score SBP Biology  2009 

Question 14: 1. The diagram shows a terrestrial ecosystem.

eagle

bird

rat

snake earthworm

Explain how energy flows through the food chain and how it is lost to the environment. [ 8 marks]

Question 15:

The figure above shows a type of transport which happens on the plasma membrane of a cell.

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Perfect score SBP Biology  2009  Based on the diagram above, name the type of transport in the above figure. Explain your answer. [6 marks] Question 16: The figure shows the organelles involved in the production of extracellular enzymes.

(a)

(i)

(iii)

Using a name example, explain the term extracellular enzyme. [2 marks] Based on the organelles shown, explain how extracellular enzymes are produced. [8 marks]

(b)

The figure shows a reaction of an enzyme and its substrate

Explain the mechanism of the enzymatic reaction [10 marks]

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Perfect score SBP Biology  2009  Question 17: Discuss the uses of enzymes in the household & industries. Why are enzyme used in these industry. [20 marks]

Question 18

Diagram above shows the structure of HIV. The virus infects helper T cells of the human ‘s immune system that caused AIDS, Acquired Immune Deficiency Syndrome.

i)

Descibe the effects of the human immunodeficiency virus (HIV) on the body’s defence mechanism. ( 6 marks )

ii)

Suggest ways to prevent the spread of Acquired Immune Deficiency Syndrome (AIDS).

( 4 marks )

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Perfect score SBP Biology  2009  Question 19

Figure shows cells P and Q undergoing cell division.

M

(a)

Based on the cell division of P, explain the best technique can be used by an oil palmer to produce a large number of oil palm in a short time. State one problem to be considered in using technique. [10 marks] (c) A farmer wants to produce large number of goat A in a short

period time. He tries to apply the concept of cell division cell P to produce new individuals of goat A. Describe the technique used. Justify the technique. [10 marks] (c) Explain how the daughter cell produced differs than parent cell. [6 marks] Question 20: Diagram 18.1 shows parent cells undergoing cell division.

DIAGRAM 6.1

Cell division 13

Perfect score SBP Biology  2009  ( a) Based on the Diagram 18.1 i) What is the process shown ? State the significant of the process. [ 4 marks ]

b) The diagram shows a group of cells that is exposed to ultraviolet ray.

The exposure drives the cell cycle malfunctions. Based on the Diagram 6.2 describe the effect of cell cycle malfunctions to the body. [ 6 marks]

(d) Cancer is a disease which causes uncontrolled growth of tissues. Suggest the method to treat cancer. Explain how this treatment stops the growth of cancer cells. [4 marks]

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Perfect score SBP Biology  2009  Question 21: Figure 20.1 shows the structure of leaf. Figure 20.2 shows the organelle M involves in the formation of starch in plants.

Figure 8.2 Figure 19.1

Based on the raw materials (inorganic substances) required in photosynthesis, explain the formation of starch(organic substance) in the plant. [10 marks] Question 22 Why this food can be kept longer compared its normal condition.

-

Cooked prawn Frozen meat Dried prunes

[8 marks ] TO BE CONTINUED……

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