Question

Assertion (A) : Coenzymes serve as cofactors in a number of different enzyme catalyzed reactions
Reaction (R) : Coenzymes and prosthetic groups are cofactors

• A. Both A and R are correct and R is the correct explanation of A
• B. Both A and R are correct and R is not the correct explanation of A
• C. A is correct but R is incorrect
• D. Both A and R are incorrect

Answer 1

The correct option is B Both A and R are correct and R is not the correct explanation of A

Co-factors are non-protein constituents bound to an enzyme to make it catalytically active. They are can be prosthetic groups, co-enzymes or metal ions.

When the co-factors are organic compounds, they are considered to be "prosthetic groups".

Coenzymes are also organic compounds that bind to enzymes, but they bind very loosely.

Hence A and R are correct but R does not explain R.