FTNA Biology Paper 2 2011 — Past Paper & Online Quiz

1. 1 mark

Rickets in children and osteomalacia in adults are conditions caused by lack of

A. vitamin A

B. vitamin B

C. vitamin C

D. vitamin D.

2. 10 marks

The following statements are either correct or not correct. Write TRUE if the statement is correct or FALSE if the statement is not correct.

(i) A group of interdependent organisms living in an environment is called a community. 1 mk

(ii) A person with blood group AB is a universal donor. 1 mk

(iii) Animal cells have no chloroplasts. 1 mk

(iv) Before the blood returns to the heart it has to be oxygenated in the liver. 1 mk

(v) Green plants are decomposers. 1 mk

(vi) Maintaining personal hygiene reduces the risk of infection. 1 mk

(vii) Malaria is transmitted by a plasmodium. 1 mk

((viii) Proteins in the diet are needed for growth and repair. 1 mk

(ix) Transpiration is not a necessary process to plants. 1 mk

(x) Valves in veins prevent the backflow of blood. 1 mk

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3. 10 marks

Match the item in List A with the correct item in List B by writing its letter below the number of the item in List A in the table provided.

(i) A disorder of the digestive system 1 mk

(ii) An enzyme that converts lipids to fatty acids and glycerol 1 mk

(iii) An enzyme that converts starch to maltose 1 mk

(iv) It contains an acidic medium for digestion 1 mk

(v) Sites for dumping waste and covering it with soil 1 mk

(vi) The first part of the small intestine 1 mk

(vii) The process of burning waste until it is completely destroyed 1 mk

((viii) The process of turning waste into new products 1 mk

(ix) The stomach of this organism have four chambers 1 mk

(x) They have true roots, stems and leaves. 1 mk

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4. 4 marks

Define the following terms:

(i) Classification 2 mk

(ii) Binomial nomenclature 2 mk

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5. 2 marks

Mention two disorders of human blood circulatory system.

(i) Write three points on the importance of classification. 1 mk

(a) What is blood circulation? 2 mk

(b) Explain three points on the importance of blood circulation in human being. 3 mk

(c) Mention two disorders of human blood circulatory system. 2 mk

(ii) Write three points on the importance of classification. 1 mk

(iii) Write three points on the importance of classification. 1 mk

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6. 3 marks

Explain the importance of gaseous exchange in plants.

(a) What do you understand by the term “diffusion”? 2 mk

(c) Explain the importance of gaseous exchange in plants. 3 mk

(b) Name two structures concerned with gaseous exchange in plants. 2 mk

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7. 4 marks

Explain two significance of food chains and food webs in real life situation.

(a) What is natural environment? 2 mk

(c) Explain two significance of food chains and food webs in real life situation. 4 mk

(b) Explain the importance of the natural environment. 3 mk

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8. 4 marks

Differentiate between aerobic and anaerobic respiration.

(c) Differentiate between aerobic and anaerobic respiration. 4 mk

(b) What is respiration? 2 mk

(a) Outline four reasons why it is important to study Biology. 4 mk

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9. 20 marks

Write an essay on kwashiorkor using the following guidelines: - meaning - cause - symptoms - effects - prevention and control.

(none) Prevention and control 1 mk

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10. 20 marks

Write an essay on tuberculosis using the following guidelines: - cause - transmission - signs/symptoms - effects - prevention and control.

(none) Prevention and control 1 mk

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Biology · Paper 2 · 2011

Biology · Paper 2 · 2011

Section A

Section B

Section C

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