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DSEE 🇹🇿 NECTA ✓ MS available

Biology · Paper 1 · 2006

18 questions

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Questions (18)

Section A

1. 4 marks

Define homeostasis and give four examples in humans.

  1. Define homeostasis. (1 mk)
  2. Give four examples in humans. (3 mk)

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2. 4 marks

List four differences between prokaryotic and eukaryotic cells.

  1. List four differences between prokaryotic and eukaryotic cells. (4 mk)

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3. 4 marks

State four factors that influence enzyme activity.

  1. State four factors that influence enzyme activity. (4 mk)

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4. 4 marks

Outline four components of blood and their functions.

  1. Outline four components of blood and their functions. (4 mk)

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5. 4 marks

Mention four structural adaptations of plant roots for absorption.

  1. Mention four structural adaptations of plant roots for absorption. (4 mk)

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6. 4 marks

State four functions of the human liver.

  1. State four functions of the human liver. (4 mk)

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7. 4 marks

List four routes through which water is lost from the body.

  1. List four routes through which water is lost from the body. (4 mk)

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8. 4 marks

Give four examples of non-communicable diseases and their causes.

  1. Give four examples of non-communicable diseases and their causes. (4 mk)

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9. 4 marks

State four advantages of classroom demonstrations in Biology teaching.

  1. State four advantages of classroom demonstrations in Biology teaching. (4 mk)

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10. 4 marks

Mention four features of an effective learning objective.

  1. Mention four features of an effective learning objective. (4 mk)

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Section B

11. 15 marks

Discuss the carbon cycle and its importance to ecosystems.

  1. Discuss the carbon cycle and its importance to ecosystems. (15 mk)

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12. 15 marks

Describe the human respiratory system and explain gas exchange.

  1. Describe the human respiratory system and explain gas exchange. (15 mk)

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13. 15 marks

Explain the structure, function, and adaptations of the nephron in kidneys.

  1. Explain the structure, function, and adaptations of the nephron in kidneys. (15 mk)

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14. 15 marks

Discuss five types of asexual reproduction in plants with examples.

  1. Discuss five types of asexual reproduction in plants with examples. (15 mk)

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Section C

15. 10 marks

During a microteaching on transpiration, learners give contrasting explanations. Explain six reflective steps to guide their conceptual clarity.

  1. Explain six reflective steps to guide their conceptual clarity. (10 mk)

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16. 10 marks

A lab assistant breaks a reagent bottle before a dissection class. Describe six actions you would take to manage safety, maintain lesson flow, and support learners.

  1. Describe six actions you would take to manage safety, maintain lesson flow, and support learners. (10 mk)

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17. 10 marks

You observe inconsistent student performance in a quiz on genetics. Propose six steps to diagnose the problem and strengthen understanding.

  1. Propose six steps to diagnose the problem and strengthen understanding. (10 mk)

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18. 10 marks

Electricity fails halfway through practical enzyme demonstration. Outline six adaptive strategies to continue the lesson effectively.

  1. Outline six adaptive strategies to continue the lesson effectively. (10 mk)

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