Question

Assertion :A coenzyme or metal ion tightly bound to enzyme protein is called prosthetic group. Reason: A complete catalytically active enzyme together with its bound prosthetic group is called apoenzyme.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
• C. Assertion is correct but Reason is incorrect.
• D. Both Assertion and Reason are incorrect.

Answer 1

The correct option is C Assertion is correct but Reason is incorrect.

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 coenzyme. These are loosely attached to the apoenzyme. The tightly bound coenzymes are prosthetic group.

Enzymes are proteins which helps to catalyze the biochemical reaction. The enzyme has a protein part which is not active is known as apoenzyme. It gets activated on addition of an organic or inorganic cofactor.

So, the correct answer is option C.