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Question
Biology
Posted 10 months ago
differentiate between an apoenzyme, cofactor, and coenzyme
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Answer from Sia
Posted 10 months ago
Answer
An apoenzyme is the protein component of an enzyme, a cofactor is a non-protein chemical compound that is required for the enzyme's activity, and a coenzyme is a specific type of cofactor that is organic and often a vitamin derivative.
Solution
a
Apoenzyme: This is the protein part of an enzyme to which a cofactor can bind, forming an active enzyme (holoenzyme). Without its cofactor, the apoenzyme is usually inactive
b
Cofactor: This is a non-protein chemical compound that binds to an enzyme and is essential for the enzyme's activity. Cofactors can be metal ions or organic molecules
c
Coenzyme: This is a specific type of cofactor that is organic and often derived from vitamins. Coenzymes are small organic molecules that transport chemical groups from one enzyme to another
Key Concept
Enzymes, cofactors, and coenzymes are all crucial for catalyzing biochemical reactions, but they differ in their composition and role in enzyme activity.
Explanation
The apoenzyme is the inactive protein part of an enzyme, which requires a cofactor to become an active holoenzyme. Cofactors can be inorganic or organic molecules, while coenzymes are a subset of cofactors that are organic and often derived from vitamins.

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