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4.2 Respiration

4.2 Respiration

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Question 30
H

A student claims that a faster pulse after exercise proves that the muscles are still respiring anaerobically. Which evaluation is best?

[1]
A

Correct, because every increase in pulse rate shows that ethanol is forming in muscles

B

Incorrect, because a faster pulse can help transport oxygen and lactic acid during recovery

C

Correct, because aerobic respiration stops completely until the resting pulse rate returns

D

Incorrect, because pulse rate is unrelated to the transport of oxygen or lactic acid

Markscheme

4.2 Respiration Questions

  1. GCSE
  2. /Biology
  3. /4.2 Respiration

51 exam-style questions on AQA GCSE Biology 4.2 Respiration, covering 4.2.1 Aerobic and anaerobic respiration, 4.2.2 Response to exercise, and 4.2.3 Metabolism. Each one has a worked solution and a mark scheme showing where the marks go.

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