O-LevelBiologyTransport in Humans5090/11 · May/June 2018 · Q191 Mark

The diagram shows how a kidney dialysis machine works. Each shape represents a molecule found in blood or dialysis fluid. Which shape represents urea?

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.

Aempty circle

Bfilled circle

Cempty square

Dempty triangle

✓ Correct answer

D: empty triangle

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Topic: Transport in Humans, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2018 Paper 1 Variant 1, question 19.

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