Match enzymes of TCA cycle in Group I with that of their products listed in Group II.

Match enzymes of TCA cycle in Group I with that of their products listed in Group II.

Group I

P. Isocitrate dehydrogenase

Q. Succinate dehydrogenase

R. Fumarase

S. x-Ketoglutarate dehydrogenase

Group II

1. x-Ketoglutarate

2. Succinyl CoA

3. Fumarate

4. Malate

(1) P-1, Q-2, R-4, S-3

(2) P-3, Q-1, R-2, S-4

(3) P-2, Q-4, R-3, S-1

(4) P-1, Q-3, R-4, S-2


The correct match between enzymes of the TCA cycle (Group I) and their products (Group II) is:

  • P. Isocitrate dehydrogenase → 1. α-Ketoglutarate
  • Q. Succinate dehydrogenase → 3. Fumarate
  • R. Fumarase → 4. Malate
  • S. α-Ketoglutarate dehydrogenase → 2. Succinyl CoA

Thus, the correct answer is:

(4) P-1, Q-3, R-4, S-2

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