| Date | May 2012 | Marks available | 1 | Reference code | 12M.1.HL.TZ2.27 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | Outline | Question number | 27 | Adapted from | N/A |
Question
How does a competitive inhibitor interact with an enzyme?
A. It binds to the active site, denaturing the enzyme.
B. It binds to the active site, preventing substrate binding.
C. It binds to an allosteric site, causing conformational change of the enzyme.
D. It binds to the allosteric site, causing competition with the substrate.
Markscheme
B
Examiners report
N/A
Syllabus sections
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