O-LevelBiologyRespiration5090/11 · May/June 2011 · Q181 Mark

An experiment is set up as shown. After four hours, the coloured water will

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Ahave gone down by the same amount in both tubes.

Bbe higher in tube 1 than in tube 2.

Cbe higher in tube 2 than in tube 1.

Dhave gone up by the same amount in both tubes.

✓ Correct answer

B: be higher in tube 1 than in tube 2.

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Topic: Respiration, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2011 Paper 1 Variant 1, question 18.

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