A) Every coenzyme is a cofactor and every cofactor is a coenzyme
B) Every coenzyme is a cofactor but every cofactor is not a coenzyme
C) Most of the coenzymes are nucleotides and are composed of vitamins
D) Coenzymes are the active constituents of enyzmes
Correct Answer: A
Solution :
Option [a] is incorrect as there are three types of cofactors, i.e. prosthetic group, coenzymes and metalions. Thus, every coenzyme is a cofactor but every cofactor is not a coenzyme.
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