Four respiratory enzymes are given below. Arrange them in the increasing order of carbon numbers of their substrates.
I. Enolase, II. Aconitase, III. Fumarase, IV. Alcohol dehydrogenase
Enolase works on 2-phosphoglyceric acid (3C compound) to form phosphoenolpyruvate in the glycolysis pathway, aconitase on citric acid (6C compound), fumarase on fumaric acid (4C compound) and alcohol dehydrogenase on acetaldehyde (2C-compound). Thus, increasing order of these enzymes based on carbon number of their substrates is - IV, I, III, II.