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4.2 Respiration

4.2 Respiration

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Question 4
F

Muscles become fatigued after long periods of vigorous exercise. What causes muscle fatigue?

[1]
A

A build-up of lactic acid in the muscles, so they contract less strongly

B

A build-up of glycogen in the muscles, so they contract less strongly

C

A build-up of glucose in the muscles, so they contract more strongly

D

A build-up of oxygen in the muscles, so they contract more strongly

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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