Question 1
State FOUR environmental problems that can be solved by studying biology.
Answer
1. Drought
2. Conservation of resources
3. Pollution
4. Food shortage
2. Conservation of resources
3. Pollution
4. Food shortage
Question 2
Aerobic break down of glucose yields 2880 kJ of energy whereas anaerobic breakdown yields 150 kJ. Give an explanation to account for this difference.
Answer
In aerobic respiration glucose is completely oxidized; releasing large amount of energy; while in anaerobic respiration, glucose is partially oxidized; releasing less energy.
Question 3
How many of 20 micrometres animal cells would fit in a 1cm long line?
Answer
Question 4
State the function of the following apparatus;
a) Specimen bottle.
b) Bait trap.
Answer
a) Specimen bottle - storage of the collected specimen(s).
b) Bait trap - Attract and trap rodents.
b) Bait trap - Attract and trap rodents.
Question 5
Name the causative agents of the following diseases:
a) Cholera
b) Malaria
Answer
a) Cholera - Vibrio chlolerae
b) Malaria - Plasmodium species
b) Malaria - Plasmodium species
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