O-LevelBiologyRespiration5090/12 · Oct/Nov 2016 · Q181 Mark

The diagram shows apparatus used to investigate respiration. [Diagram for Q18] Which change will be seen and what is the explanation?

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Aoil drop moves left, oxygen is used up by the peas

Boil drop does not move, oxygen is used up as fast as carbon dioxide is released

Coil drop does not move, carbon dioxide is absorbed

Doil drop moves right, peas release carbon dioxide

✓ Correct answer

A: oil drop moves left, oxygen is used up by the peas

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Topic: Respiration, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, Oct/Nov 2016 Paper 1 Variant 2, question 18.

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