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O-LevelBiologyEnzymes5090/11 · May/June 2021 · Q41 Mark

What is a correct description of enzymes?

Abiological catalysts made of lipids

Bbiological catalysts made of proteins

Ccatalysts that slow down chemical reactions and are changed by the reaction

Dcatalysts that speed up chemical reactions and are changed by the reaction

✓ Correct answer

B: biological catalysts made of proteins

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About this question

Topic: Enzymes, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2021 Paper 1 Variant 1, question 4.

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