O-LevelBiologyTransport in Humans5090/11 · May/June 2021 · Q151 Mark

The diagram represents the blood supply to the liver and to the kidneys. Which vessels contain blood with the highest and lowest concentrations of urea? [Figure 7.1]

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.

Ahighest 1, lowest 2

Bhighest 1, lowest 4

Chighest 3, lowest 2

Dhighest 3, lowest 4

✓ Correct answer

B: highest 1, lowest 4

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Topic: Transport in Humans, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2021 Paper 1 Variant 1, question 15.

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