O-LevelBiologyRespiration5090/11 · Oct/Nov 2014 · Q181 Mark

Which apparatus can be used to investigate the production of carbon dioxide by anaerobic respiration of yeast?

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.

Ayeast and sugar solution in water bath at 40 °C with oil layer

Byeast and sugar solution in water bath at 100 °C with oil layer

Cyeast and sugar solution in water bath at 40 °C with no oil layer

Dyeast and sugar solution in water bath at 100 °C with no oil layer

✓ Correct answer

A: yeast and sugar solution in water bath at 40 °C with oil layer

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Topic: Respiration, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, Oct/Nov 2014 Paper 1 Variant 1, question 18.

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