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O-LevelBiologyTransport in Humans5090/11 · May/June 2023 · Q331 Mark

The diagram shows the arrangement of blood vessels in the uterus wall and placenta of a pregnant woman. What will increase in concentration in the blood as it flows from 1 to 2?

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.

Aamino acids
Bcarbon dioxide
Cglucose
Doxygen

✓ Correct answer

B: carbon dioxide

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About this question

Topic
Transport in Humans, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source
O-Level Biology, May/June 2023 Paper 1 Variant 1, question 33.

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