Home / iGCSE Biology (0610)-12.1 Respiration – iGCSE Style Questions Paper 2

iGCSE Biology (0610)-12.1 Respiration – iGCSE Style Questions Paper 2

Question

Which process uses energy released in respiration?
A   diffusion
B   evaporation
C   growth
D   osmosis

Answer/Explanation

Ans
C

Question

Yeast is able to respire both aerobically and anaerobically.

Which statement describes the waste products of yeast respiration?

A    Aerobic respiration produces alcohol as one of its waste products.
B    Aerobic respiration produces three times as much carbon dioxide as anaerobic respiration from one molecule of glucose.
C    Anaerobic respiration and aerobic respiration both produce the same amount of carbon dioxide from one molecule of glucose.
D   Anaerobic respiration produces three times as much carbon dioxide as aerobic respiration from one molecule of glucose.

Answer/Explanation

Ans:   B

Question

The flow diagram summarises three different ways that glucose can be broken down to release
        energy.

Which routes involve the action of enzymes?
1 only                1 and 2 only                C  2 and 3 only                1, 2 and 3

Answer/Explanation

Ans: D

Question

Potted plants are left for a week in a tank of water as shown.

Why do the plants die?
A The roots do not have enough oxygen.
B The roots do not have enough water.
C The roots have too much oxygen.
D The roots have too much carbon dioxide.

Answer/Explanation

Ans: A

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