CSEE Biology Paper 1 2023 — Past Paper & Online Quiz

1. 1 mark

Which theory postulates that living organisms originated from non-living organisms?

A. Chemical evolution

B. Cosmozoan

C. Steady state

D. Spontaneous generation

E. Special creation

2. 0 marks

Match the functions of the parts of the ear in List A with their corresponding parts in List B by writing the letter of the correct response beside the item number in the answer booklet provided. List A List B A Pinna B Eustachian tube C Eardrum D Auditory nerve E Auditory meatus F Ossicles G Cochlea H Semicircular canal

(i) Maintains body posture and balance. 0 mk

(a) Maintains body posture and balance. 1 mk

(b) Carries nerve impulses from the inner ear to the brain. 1 mk

(ii) Carries nerve impulses from the inner ear to the brain. 0 mk

(c) Transmits and magnifies sound vibrations. 1 mk

(iii) Transmits and magnifies sound vibrations. 0 mk

(iv) Converts sound vibrations to nerve impulses. 0 mk

(d) Converts sound vibrations to nerve impulses. 1 mk

(e) Collects sound waves from the environment. 1 mk

(v) Collects sound waves from the environment. 0 mk

(f) Balances pressure on both sides of the tympanic membrane. 1 mk

(vi) Balances pressure on both sides of the tympanic membrane. 0 mk

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3. 0 marks

Suppose your friends have been diagnosed with indigestion problem.

(a) What would be the major possible causes of this problem? Provide three points. 0 mk

(b) Suggest four measures you would recommend to them to avoid the problem in future. 0 mk

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4. 0 marks

(none) Suggest six ways to minimize the occurrence of miscarriage to the pregnant woman. 0 mk

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5. 0 marks

(a) Draw a diagram of human body and show the location of the thyroid gland, adrenal gland, pancreas gland and pituitary gland. 0 mk

(a) Draw a diagram of the human body and show the location of the thyroid gland, adrenal gland, pancreas gland and pituitary gland. 0 mk

(b) Explain the role of the two hormones produced by the pancreas gland. 0 mk

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6. 0 marks

(a) Briefly explain the given terms as used in genetics: (i) Sex limited characters. (ii) Sex linked characters. (iii) Sex influenced characters. 0 mk

(b) Differentiate incomplete dominance from codominance. 0 mk

((a)(i) Briefly explain sex influenced characters. 1 mk

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7. 0 marks

(none) Briefly explain six factors which affect the rate of physical deterioration of human being. 0 mk

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8. 0 marks

(a) Draw a diagram of the reproductive structures of a branch of pine tree and label its two parts. 0 mk

(b) Explain three advantages of the pine trees. 0 mk

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9. 0 marks

(none) Poor waste disposal creates problems in the environment. In six points, justify this statement. 0 mk

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10. 0 marks

(none) Analyse six features that make the human heart to pump blood efficiently. 0 mk

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11. 0 marks

(none) One of the students was diagnosed with malaria. Suggest five measures to be taken by the victim to avoid that disease in the future. 0 mk

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Biology · Paper 1 · 2023

Biology · Paper 1 · 2023

Section A

Section B

Section C

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