O-LevelBiologyTransport in Humans5090/11 · May/June 2022 · Q21 Mark

The diagram shows the shape of a red blood cell. [Figure 2.1] What is an advantage of this shape?

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.

Aallows it to carry more haemoglobin

Ballows it to move more quickly in arteries

Cincreases its surface area for diffusion

Dprevents it getting trapped in valves in veins

✓ Correct answer

C: increases its surface area for diffusion

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Topic: Transport in Humans, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2022 Paper 1 Variant 1, question 2.

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