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DSEE 🇹🇿 NECTA ✓ MS available

Biology · Paper 1 · 2003

18 questions

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Questions (18)

Section A

1. 4 marks

Define ecology and list four ecosystem components.

  1. List four ecosystem components. (1 mk)

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2. 4 marks

List four differences between arteries and veins.

  1. List four differences between arteries and veins. (1 mk)

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3. 4 marks

Give four causes of genetic variation.

  1. Give four causes of genetic variation. (1 mk)

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4. 4 marks

State four environmental factors affecting photosynthesis.

  1. State four environmental factors affecting photosynthesis. (1 mk)

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5. 4 marks

List four types of fungi used in industry.

  1. List four types of fungi used in industry. (1 mk)

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6. 4 marks

Give four symptoms of vitamin C deficiency.

  1. Give four symptoms of vitamin C deficiency. (1 mk)

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7. 4 marks

Mention four properties of acids and bases.

  1. Mention four properties of acids and bases. (1 mk)

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8. 4 marks

State four roles of teachers during practical sessions.

  1. State four roles of teachers during practical sessions. (1 mk)

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9. 4 marks

List four advantages of plants’ cross-pollination.

  1. List four advantages of plants’ cross-pollination. (1 mk)

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10. 4 marks

State four elements commonly found in proteins.

  1. State four elements commonly found in proteins. (1 mk)

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Section B

11. 15 marks

Explain the structure and function of the mammalian nephron.

  1. Explain the function of the mammalian nephron. (1 mk)

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12. 15 marks

Discuss types and importance of immunity.

  1. Discuss the importance of immunity. (1 mk)

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13. 15 marks

Describe the mechanism of nerve impulse transmission.

  1. Describe the mechanism of nerve impulse transmission. (1 mk)

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14. 15 marks

Explain ecological niches using examples.

  1. Provide examples of ecological niches. (1 mk)

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Section C

15. 10 marks

A lesson on cellular respiration is disrupted mid-way by fire drill. Outline six steps to salvage learning and reschedule demonstration.

  1. Outline six steps to salvage learning and reschedule demonstration. (1 mk)

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16. 10 marks

Learners misinterpret the meaning of “optimum” in enzyme graphs. Describe six instructional approaches to clarify and reinforce concept.

  1. Describe six instructional approaches to clarify and reinforce concept. (1 mk)

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17. 10 marks

A peer-review session shows inconsistent feedback quality. Detail six guidelines you would give to improve accuracy and development-focused feedback.

  1. Detail six guidelines to improve accuracy and development-focused feedback. (1 mk)

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18. 10 marks

A teacher ignores bilingual learners during explanation. Propose six inclusive strategies to support language and concept understanding.

  1. Propose six inclusive strategies to support language and concept understanding. (1 mk)

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