O-LevelBiologyRespiration5090/11 · Oct/Nov 2021 · Q181 Mark

Which graph shows a person's breathing when at rest and then exercising? [Figure 18]

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.

A[Graph A]

B[Graph B]

C[Graph C]

D[Graph D]

✓ Correct answer

A: [Graph A]

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Topic: Respiration, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, Oct/Nov 2021 Paper 1 Variant 1, question 18.

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