Biology · Paper 2 · 2023
36 questions 🇹🇿 NECTA ✓ MS3-hour timed simulation · auto-graded · counts toward ranking
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Section A
Which branch of biology deals with the study of plants?
Match the functions of the blood vessels in List A with the name of the blood vessels in List B by writing the letter of the correct response below the corresponding item number in a table provided. List A (i) Transports oxygenated blood from the lungs to the heart. (ii) Carries blood containing waste materials away from the heart. (iii) Transports deoxygenated blood from the heart to the lungs. (iv) Transports deoxygenated blood from the lower parts of the body to the heart. (v) Transports deoxygenated blood from the upper parts of the body to the heart. List B A Coronary artery B Superior vena cava C Hepatic artery D Pulmonary artery E Inferior vena cava F Renal vein G Coronary vein H Pulmonary vein
- Transports oxygenated blood from the lungs to the heart. (1 mk)
- Carries blood containing waste materials away from the heart. (1 mk)
- Transports deoxygenated blood from the heart to the lungs. (1 mk)
- Transports deoxygenated blood from the lower parts of the body to the heart. (1 mk)
- Transports deoxygenated blood from the upper parts of the body to the heart. (1 mk)
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Section B
How is each of the communicable disease sorted in (a) (i) transmitted?
- Non communicable diseases (2 mk)
- How is Syphilis transmitted? (1 mk)
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Form Two students were asked to observe sections of plant cells using a light microscope.
- Why was it necessary to use such an instrument? (2 mk)
- Draw a diagram of a light microscope and label the seven parts. (3 mk)
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What will happen if the cell membrane is severely damaged?
- Plant cell (1 mk)
- Animal cell (1 mk)
- Plant cell (1 mk)
- Animal cell (1 mk)
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Your community requested you to educate them about modern methods of preserving its milk, meat, tomatoes, mangoes and vegetables. Briefly explain to them four methods for preserving such products.
- (2 mk)
- (2 mk)
- (2 mk)
- (2 mk)
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Outline four procedures you will follow to give the First Aid to a person with the problem of nose bleeding.
- (1 mk)
- (1 mk)
- (1 mk)
- (1 mk)
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Fungi are important organisms to human being. By using four points, justify this statement.
- (2 mk)
- (4 mk)
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Why is blood transfusion important for these individuals? Give a reason.
- (1 mk)
- (1 mk)
- (1 mk)
- (1 mk)
- (1 mk)
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Section C
Caring and supporting people living with HIV/AIDS is essential for them to live a healthy lives. In six points, justify this statement.
- (6 mk)
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