Which organelles are found in both plant and animal cells? (A) Chloroplast, cell wall and cell membrane (B) Cell membrane, nucleus and cytoplasm (C) Vacuole, cell membrane and cell wall (D) Cell wall, chloroplast and vacuole (E) Chloroplast, nucleus and cell wall

Match the uses of apparatuses in List A with the corresponding apparatuses in List B by writing the letter of the correct response beside the item number in the answer booklet provided. List A (i) An apparatus used for heating substance in the laboratory. (ii) An apparatus used for storing test tubes so that they do not roll or break. (iii) An apparatus used for measuring volume of liquids. (iv) An apparatus used to magnify specimens. (v) An apparatus used for keeping live aquatic animals in the laboratory. List B A Bunsen burner B Aquarium C Measuring cylinder D Hand lens E Spatula F Test tube rack G Filter funnel H Test tube holder

1. An apparatus used for heating substance in the laboratory. (1 mk)
2. An apparatus used for storing test tubes so that they do not roll or break. (1 mk)
3. An apparatus used for measuring volume of liquids. (1 mk)
4. An apparatus used to magnify specimens. (1 mk)
5. An apparatus used for keeping live aquatic animals in the laboratory. (1 mk)

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In natural selection, which types of characteristics are affected?

"Animals cannot survive without moving from one place to another." Justify this statement by giving three points with one example in each.

1. Justify the statement by giving three points with one example in each. (6 mk)

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Mr. Shamba got a car accident and was badly injured. During the First Aid process Mr. Sai put on gloves, took a cotton wool and gave him painkillers. What was the use of: (a) gloves? (b) cotton wool? (c) painkillers?

1. What was the use of gloves? (1 mk)
2. What was the use of cotton wool? (1 mk)
3. What was the use of painkillers? (1 mk)

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Explain how the human urinary system is adapted to perform its roles effectively. Give four points. (c1) Why is it generally advised to boil drinking water? (c2) List four types of diseases that are transmitted from one person to another. (1x4)

1. Explain how the human urinary system is adapted to perform its roles effectively. Give four points. (4 mk)
2. Why is it generally advised to boil drinking water? (1 mk)
3. List four types of diseases that are transmitted from one person to another. (4 mk)

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Define the following terms and give one example for each. (a) Competition (b) Mutualism (c) Predation

1. Competition (2 mk)
2. Mutualism (2 mk)
3. Predation (2 mk)

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(a) Differentiate the term hyperglycaemia from hypoglycaemia. (b) Give four symptoms of a person suffering from diabetes mellitus.

1. Differentiate the term hyperglycaemia from hypoglycaemia. (2 mk)
2. Give four symptoms of a person suffering from diabetes mellitus. (4 mk)

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(a) Why is it impossible for a locust to die when its head is held under water? (b) Why do people breathe more when they run fast?

1. Why is it impossible for a locust to die when its head is held under water? (2 mk)
2. Why do people breathe more when they run fast? (2 mk)

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Briefly explain how the nervous system and the adrenal gland work together to bring about a response when a person is threatened by a lion.

1. Briefly explain how the nervous system and the adrenal gland work together to bring about a response when a person is threatened by a lion. (5 mk)

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Why is transpiration important to plants? Give three reasons.

1. Why is transpiration important to plants? Give three reasons. (3 mk)
2. An apparatus used for heating substance in the laboratory. (1 mk)
3. An apparatus used for storing test tubes so that they do not roll or break. (1 mk)
4. An apparatus used for measuring volume of liquids. (1 mk)
5. An apparatus used to magnify specimens. (1 mk)
6. An apparatus used for keeping live aquatic animals in the laboratory. (1 mk)

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A heterozygous normal skinned man married a heterozygous normal skinned woman. They gave birth to three normal skinned children and one albino child. The father complained that the albino child was not his. As a biologist use genetic cross to find out whether the albino child belongs to the father or not.

1. As a biologist use genetic cross to find out whether the albino child belongs to the father or not. (10 mk)

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Why is it heavily advised to boil drinking water?

1. Explain the reason. (3 mk)

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Explain four family planning methods and indicate one disadvantage of each.

1. Explain four family planning methods and indicate one disadvantage of each. (15 mk)
2. gloves? (1 mk)
3. cotton wool? (1 mk)
4. painkiller? (1 mk)

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Why is it important for plants to carry out photosynthesis? Explain by giving four reasons.

1. Why is it important for plants to carry out photosynthesis? Explain by giving four reasons. (10 mk)

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Describe the process of ejaculation. Give five examples of things that increase the rate of pulse, and discuss their effects on the body.

1. Which components control the flow of blood into the heart? (2 mk)
2. Which components control the flow of blood out of the heart? (2 mk)
3. Give five examples of things that increase the rate of pulse, and discuss their effects on the body. (5 mk)

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