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A-LevelBiologyEnzymes9700/12 · May/June 2015 · Q131 Mark

Which levels of protein structure are always involved when competitive and non-competitive inhibitors bind to enzymes?

Aprimary, secondary and tertiary competitive; secondary non-competitive
Bquaternary and tertiary competitive; quaternary and tertiary non-competitive
Csecondary competitive; primary and tertiary non-competitive
Dtertiary competitive; tertiary non-competitive

✓ Correct answer

D: tertiary competitive; tertiary non-competitive

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About this question

Topic
Enzymes, A-Level Biology (syllabus 9700). Multiple choice, 1 mark.
Source
A-Level Biology, May/June 2015 Paper 1 Variant 2, question 13.

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