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O-LevelBiologyRespiration5090/11 · Oct/Nov 2017 · Q261 Mark

How do bacteria change milk into yoghurt?

Aby producing alcohol

Bby producing carbon dioxide

Cby producing lactic acid

Dby producing oxygen

✓ Correct answer

C: by producing lactic acid

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About this question

Topic: Respiration, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, Oct/Nov 2017 Paper 1 Variant 1, question 26.

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