GCE paper 1 Biology questions

Here are some paper 1 question taken from GCE 'O' Level past papers.
1.A new cell is being examined.
   Which feature would enable you to identify it as a plant cell or an animal cell?
A The cell contains a single large sap vacuole space.
B The cell contains glucose and amino acids.
C The cell contains stored fat.
D The cell surface membrane is partially permeable.

2. What is the function of chlorophyll in plants?
A to absorb carbon dioxide
B to absorb light
C to absorb nitrate
D to absorb water

3. Why is it important to include fibre in the diet?
A It gives energy to keep the body warm.
B It helps food pass through the gut.
C It increases growth in young children.
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D It is easy to digest.

4. Which substance builds up in a muscle as a result of anaerobic respiration?
A carbon dioxide
B ethanol
C lactic acid
D water

5. Which processes return carbon dioxide into the atmosphere?
A combustion and feeding
B feeding and photosynthesis
C photosynthesis and respiration
D respiration and combustion

6. Which equation represents anaerobic respiration in yeast?
A glucose → alcohol + carbon dioxide
B glucose → alcohol + water
C glucose → lactic acid + carbon dioxide
D glucose → lactic acid + water

7. What is the excretory product in blood that is removed by the lungs?
A carbon dioxide
B lactic acid
C urea
D water

8. Cutting down large areas of tropical forest can lead to a reduction in rainfall.
What is the reason for the reduction in rainfall?
A a reduction in photosynthesis
B a reduction in transpiration
C an increase in flooding
D an increase in respiration

9. What is a method of preventing the spread of HIV?
A avoiding sharing cups for drinking
B checking blood before transfusions
C taking the contraceptive pill
D using spermicides

10. Which two characteristics both show continuous variation?
A height and weight
B sex and sickle-cell anaemia
C sickle-cell anaemia and height
D weight and sex

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