Question

Which of the following components are present in most of the enzymes?

• A. Enzyme and substrate
• B. Enzyme and coenzyme
• C. Apoenzyme and enzyme
• D. Apoenzyme and prosthetic group

Answer 1

The correct option is D Apoenzyme and prosthetic group

• A coenzyme or metal ion that is very tightly or even covalently bound to the enzyme protein is called a prosthetic group.
• A complete, catalytically active enzyme together with its bound coenzyme and/or metal ions is called a holoenzyme. The protein part of such an enzyme is called the apoenzyme.
• The presence of the apoenzyme and coenzyme accentuates the enzymatic activity.

So, the correct answer is option D.