Biological molecules (proteins) which catalyze a biochemical reaction and remain unchanged after completion of reaction are called_____________________?
Correct answer: D. Enzymes
- A. Cofactor
- B. Coenzymes
- C. Activator
- D. Enzymes
Explanation
Enzymes are biological catalysts, usually proteins, that speed biochemical reactions by lowering activation energy and remain chemically unchanged after the reaction. The likely alternative is coenzyme, but a coenzyme is a non-protein helper molecule, not the complete protein catalyst itself.
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