1.

What is the first step in the payoff phase of glycolysis?(a) Reduction of 1, 3-bisphosphoglycerate to glyceraldehyde 3-phosphate(b) Oxidation of glyceraldehyde 3-phosphate to 1, 3-bisphosphoglycerate(c) Reversible conversion of dihydroxyacetone phosphate to glyceraldehyde 3-phosphate(d) Irreversible conversion of dihydroxyacetone phosphate to glyceraldehyde 3-phosphate

Answer» Right choice is (b) Oxidation of glyceraldehyde 3-phosphate to 1, 3-bisphosphoglycerate

The explanation is: Glyceraldehyde 3-phosphate dehydrogenase catalyzes the first step in the payoff phase, oxidation of glyceraldehyde 3-phosphate to 1, 3-bisphosphoglycerate.


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