The process of breaking down food into simpler substances is called:

The large intestine is the primary site for nutrient absorption.

Match the phrase or term in List A with that in List B by writing its letter against the appropriate position in the space provided alongside List A.

1. Site of protein synthesis in a cell (1 mk)
2. Disease caused by lack of vitamin C (1 mk)
3. Structure that controls cell activities (1 mk)
4. Gas essential for aerobic respiration (1 mk)
5. Organism that feeds on dead organic matter (1 mk)
6. Process of taking in food into the mouth (1 mk)
7. Blood cells that fight infections (1 mk)
8. Plant tissue responsible for sugar transport (1 mk)
9. Deficiency disease due to lack of iron (1 mk)
10. Organ for gaseous exchange in fish (1 mk)

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4. (a) Define the term "cell". (b) List four differences between a prokaryotic and eukaryotic cell. PROKARYOTIC CELL EUKARYOTIC CELL (i) (i) (ii) (ii) (iii) (iii) (iv) (iv) (c) State two functions of the cell membrane. (i) (ii)

1. Define the term "cell". (0 mk)
2. List four differences between a prokaryotic and eukaryotic cell. (0 mk)
3. State two functions of the cell membrane. (0 mk)

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5. (a) What is meant by the term "balanced diet"? (b) Name three components of a balanced diet and give one example of each. (i) Example: (ii) Example: (iii) Example: (c) Mention two deficiency diseases caused by lack of vitamins. (i) (ii)

1. What is meant by the term "balanced diet"? (0 mk)
2. Name three components of a balanced diet and give one example of each. (0 mk)
3. Mention two deficiency diseases caused by lack of vitamins. (0 mk)

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6. (a) Draw a labelled diagram of the human respiratory system from the trachea to the alveoli. (b) Explain two adaptations of the alveoli for gaseous exchange. (i) (ii)

1. Draw a labelled diagram of the human respiratory system from the trachea to the alveoli. (0 mk)
2. Explain two adaptations of the alveoli for gaseous exchange. (0 mk)

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What is meant by the term "ecology"?

1. What is meant by the term "ecology"? (4 mk)
2. List three abiotic factors that affect living organisms in an ecosystem. (3 mk)
3. Name two types of ecological interactions between organisms. (2 mk)

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Define the term "First Aid".

1. Define the term "First Aid". (2 mk)
2. Outline three steps to provide First Aid to a person with a minor burn. (6 mk)
3. List two items found in a First Aid kit. (2 mk)

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Write an essay on HIV/AIDS using the following guidelines: • Definition of HIV/AIDS • Modes of transmission • Symptoms of AIDS • Effects on individuals and society • Preventive measures

1. Write an essay on HIV/AIDS using the following guidelines: • Definition of HIV/AIDS • Modes of transmission • Symptoms of AIDS • Effects on individuals and society • Preventive measures (20 mk)

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Write an essay on the importance of classification of living organisms using the following guidelines: • Definition of classification • Reasons for classifying living organisms • Hierarchical levels of classification • Importance of binomial nomenclature

1. Write an essay on the importance of classification of living organisms using the following guidelines: • Definition of classification • Reasons for classifying living organisms • Hierarchical levels of classification • Importance of binomial nomenclature (20 mk)

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