(a) State four functions of the liver related to fat digestion. (b) What happens when the liver has too much fat.

1. State four functions of the liver related to fat digestion. (0 mk)
2. What happens when the liver has too much fat. (0 mk)

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Explain how the hormones calcitonin and parathormone regulate calcium levels in the body.

1. Explain how the hormones calcitonin and parathormone regulate calcium levels in the body. (0 mk)

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Explain the meaning of the term isotope and give one example.

1. Explain the meaning of the term isotope and give one example. (0 mk)

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List four ways to prevent poisonous chemicals from contaminating food.

1. List four ways to prevent poisonous chemicals from contaminating food. (0 mk)

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(a) Define four characteristics of a forest ecosystem. (b) What happens when a forest ecosystem is removed.

1. Define four characteristics of a forest ecosystem. (0 mk)
2. What happens when a forest ecosystem is removed. (0 mk)

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State four steps of the procedure for teaching through mime.

1. State four steps of the procedure for teaching through mime. (0 mk)

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Explain the concept of thermal pollution and its effects.

1. Explain the concept of thermal pollution and its effects. (0 mk)

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(a) Explain how the behaviour of light can be distinguished according to the colour of objects. (b) Give one example of such a distinction.

1. Explain how the behaviour of light can be distinguished according to the colour of objects. (0 mk)
2. Give one example of such a distinction. (0 mk)

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List four uses of glass in everyday life.

1. List four uses of glass in everyday life. (0 mk)

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State four factors to consider when disposing of laboratory waste.

1. State four factors to consider when disposing of laboratory waste. (0 mk)

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Explain in detail how solar energy is generated and its two advantages.

1. Explain in detail how solar energy is generated and its two advantages. (0 mk)

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Describe how the nervous system collaborates with the endocrine system in regulating female reproduction.

1. Describe how the nervous system collaborates with the endocrine system in regulating female reproduction. (0 mk)

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(a) Name and describe three states of matter. (b) Explain how matter changes state.

1. Name and describe three states of matter. (0 mk)
2. Explain how matter changes state. (0 mk)

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Discuss four reasons why teaching Science requires thorough preparation.

1. Discuss four reasons why teaching Science requires thorough preparation. (0 mk)

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(a) Explain the meaning of the conceptual cycle approach. (b) Describe the three stages of the conceptual cycle approach.

1. Explain the meaning of the conceptual cycle approach. (0 mk)
2. Describe the three stages of the conceptual cycle approach. (0 mk)

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List and describe five challenges of assessing students' understanding in Science.

1. List and describe five challenges of assessing students' understanding in Science. (0 mk)

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Explain why a Science teacher should learn indigenous languages. State four reasons.

1. Explain why a Science teacher should learn indigenous languages. State four reasons. (0 mk)

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Explain how the indoor classroom environment can be modified to enhance students' understanding of Science and give three examples.

1. Explain how the indoor classroom environment can be modified to enhance students' understanding of Science and give three examples. (0 mk)

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