Question

Which one is not a co-factor?

• A. Coenzyme
• B. Apoenzyme
• C. Prosthetic group
• D. Metal ion

Answer 1

The correct option is B Apoenzyme

Cofactors are defined as non-protein compounds typically metal ions or coenzymes that facilitates enzyme activity. Coenzymes are organic molecules and when they bind tightly with each other are termed as prosthetic group. Apoenzymes are described as enzymes that do not contain any cofactor molecule for their enzymatic activity and thus called inactive enzymes.

So, the correct answer is option B.