O-LevelBiologyTransport in Humans5090/12 · Oct/Nov 2018 · Q151 Mark

The diagram shows chemicals being exchanged between some cells and a blood capillary. [Figure 15.1] What could be the identities of chemicals P and Q?

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AP: amino acids and oxygen, Q: carbon dioxide and maltose

BP: carbon dioxide and glucose, Q: alcohol and oxygen

CP: carbon dioxide and urea, Q: oxygen and protein

DP: glucose and oxygen, Q: carbon dioxide and water

✓ Correct answer

D: P: glucose and oxygen, Q: carbon dioxide and water

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Topic: Transport in Humans, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, Oct/Nov 2018 Paper 1 Variant 2, question 15.

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