Question

Consider the following statements :

(A) Coenzyme or metal ion that is tightly bound to enzyme protein is called a prosthetic group.

(B) A complete catalytic active enzyme with its bound prosthetic group is called apoenzyme.

Select the correct option.

• A. (A) is false but (B) is true
• B. Both (A) and (B) are true
• C. (A) is true but (B) is false
• D. Both (A) and (B) are false

Answer 1

The correct option is (C):

Explanation of the correct option:

Statement (A):

1. The non-proteinaceous metal ion acts as a coenzyme which is tightly bound with the protein forming the prosthetic group.
   
2. It is not a proteinaceous molecule which when remains bound with the enzyme which helps with the functioning of the enzyme.
   

Statement (B):

1. Only the protein structure of the enzyme is called the apoenzyme.
   
2. The complete catalytically active enzyme where the protein structure of the enzyme is bound to the prosthetic group is called a holoenzyme.
   

Final Answer: The correct answer is '(A) is true but (B) is false'.