What are biological macromolecules that speed up biochemical reactions without being consumed or altered called?

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

Enzymes are proteins that act as catalysts in biochemical reactions, accelerating the process without undergoing any permanent change themselves. Cofactors and coenzymes assist enzymes, while activators enhance enzyme activity. Substrates are the molecules upon which enzymes act.

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