Match the following & choose the correct option from those given below :-  Column-I   Column-II(A) Molecular oxygen (i) a-ketoglutaric acid(B) Electron acceptor (ii) Hydrogen acceptor(C) Pyruvate dehydrogenase (iii) Cytochrome C(D) Decarboxylation (iv) Acetyl CoA = ii,  B - iii, C - iv, D - iA = iii, B - iv, C - ii,  D - iA = ii,  B - i,   C - iii, D - ivA = iv, B - iii, C - i,   D - ii

The correct option is:

A = iii, B = ii, C = iv, D = i

Explanation:

(A) Molecular oxygen (O2) is the final electron acceptor in the electron transport chain of aerobic respiration, so it matches with (iii) Cytochrome C.

(B) An electron acceptor is a chemical entity that accepts electrons transferred to it from another compound. It is an oxidizing agent that, by virtue of its accepting electrons, is itself reduced in the process. Hence, it matches with (ii) Hydrogen acceptor.

(C) Pyruvate dehydrogenase is an enzyme that converts pyruvate to Acetyl CoA, so it matches with (iv) Acetyl CoA.

(D) Decarboxylation is a chemical reaction that removes a carboxyl group and releases carbon dioxide (CO2). This process is involved in the conversion of a-ketoglutaric acid to succinyl CoA in the citric acid cycle. Hence, it matches with (i) a-ketoglutaric acid.