What is the term for a chemical compound that binds to an enzyme's active site, preventing the substrate from attaching, but does not undergo any chemical change itself, thereby temporarily or permanently hindering enzyme activity?

Biology Mcqs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

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Subject
Biology Mcqsbiology-mcqs
Published
11 May 2018
Last updated
28 May 2026

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Explanation

An inhibitor is a molecule that attaches to an enzyme's active site without being converted into a product, effectively blocking the substrate and reducing enzyme activity either temporarily or permanently. In contrast, coenzymes and cofactors assist enzyme function, while blockers and activators have different roles.

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