O-LevelBiologyEcology & Environment5090/12 · May/June 2023 · Q361 Mark

The diagram shows a fermenter that is used to grow the fungus Penicillium, to produce penicillin. [Figure 36.1] What is the function of the outer water jacket?

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Ato add extra nutrients for the Penicillium

Bto maintain the fermenter at a constant pH

Cto maintain the fermenter at a constant temperature

Dto monitor the oxygen concentration in the fermenter

✓ Correct answer

C: to maintain the fermenter at a constant temperature

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Topic: Ecology & Environment, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2023 Paper 1 Variant 2, question 36.

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