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4.2 Respiration

4.2 Respiration

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Question 19
F

A respirometer shows that an organism takes in oxygen but produces no measurable carbon dioxide. Which conclusion is best supported by the information?

[1]
A

Aerobic respiration may be occurring, but the carbon dioxide may be absorbed or retained

B

Anaerobic respiration must be occurring because carbon dioxide is never produced aerobically

C

Fermentation must be occurring because oxygen is a product of respiration in yeast cells

D

Respiration has stopped because every energy transfer releases measurable carbon dioxide

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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