Question

Non-protein organic component of enzyme is

• A. Apoenzyme
• B. Holoenzyme
• C. Coenzyme
• D. Isoenzyme

Answer 1

Answer: (C)

Coenzyme

Enzymes are proteins which help to catalyze the biochemical reaction. The enzyme has a protein part which is not active is known as apoenzyme. It gets activated by the addition of an organic or inorganic cofactor. The holoenzyme is defined as apoenzyme in combination with the cofactor.

A cofactor is a non-protein part of the enzyme. It can be metal ions or the organic chemical. The cofactors which are organic chemicals are known as a coenzyme. These are loosely attached to the apoenzyme. The tightly bound coenzymes are the prosthetic group.

So, the correct answer is option C.