First slide

Enzymes

Question

Which statement is incorrect about coenzyme?

Easy

A

Co-enzymes are organic compounds.
B

The association of coenzyme with apoenzyme is only transient.
C

The essential chemical components of many coenzymes are vitamins.
D

Every coenzyme is a cofactor and every cofactor is a coenzyme.

Solution

There are three kinds of cofactors: prosthetic groups, co-enzymes and metal ions. Therefore, every coenzyme is a cofactor but every cofactor is not a coenzyme. Ce-enzymes are a type of organic cofactors loosely associated with apoenzyme at the time of catalysis and usually the active forms of vitamins.

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