O-LevelBiologyTransport in Humans5090/12 · Oct/Nov 2014 · Q141 Mark

The diagram shows a section through the human heart. [Figure 14.1] Why is the wall of the right ventricle thicker than the wall of the right atrium?

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.

AThe chambers have different oxygen concentrations.

BThe right atrium must pump blood all the way around the body.

CThe right ventricle must exert a greater force than the right atrium.

DThe right ventricle receives more blood than the right atrium.

✓ Correct answer

C: The right ventricle must exert a greater force than the right atrium.

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Topic: Transport in Humans, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, Oct/Nov 2014 Paper 1 Variant 2, question 14.

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