NEETBotanyBiomolecules (B)
Match List-I with List-II regarding enzymes and their cofactors: List-I List-II (A) Prosthetic group (I) NAD and NADP (B) Coenzyme (II) Zinc (C) Metal ion (III) Apoenzyme (D) Protein part of enzyme (IV) Haem Choose the correct answer from the options given below:
Options
- A(A)-(I), (B)-(IV), (C)-(II), (D)-(III)
- B(A)-(IV), (B)-(I), (C)-(III), (D)-(II)
- C(A)-(IV), (B)-(II), (C)-(I), (D)-(III)
- D(A)-(IV), (B)-(I), (C)-(II), (D)-(III)
Correct answer
D. (A)-(IV), (B)-(I), (C)-(II), (D)-(III)
Step-by-step solution
The protein portion of enzymes is called the apoenzyme. Prosthetic groups are organic compounds that are tightly bound to the apoenzyme. For example, in peroxidase and catalase, haem is the prosthetic group. Coenzymes are also organic compounds but their association with the apoenzyme is only transient. Examples include NAD and NADP. A number of enzymes require metal ions for their activity, which form coordination bonds with side chains at the active site. Zinc is a metal ion cofactor for carboxypeptidase. Thus, t