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O-LevelBiologyRespiration5090/12 · May/June 2014 · Q261 Mark

Yeast is used in alcohol production. Under which conditions will yeast produce most alcohol?

Aglucose present (✓), oxygen present (✓)

Bglucose present (✓), oxygen present (✗)

Cglucose present (✗), oxygen present (✓)

Dglucose present (✗), oxygen present (✗)

✓ Correct answer

B: glucose present (✓), oxygen present (✗)

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About this question

Topic: Respiration, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2014 Paper 1 Variant 2, question 26.

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