The Steps of Glycolysis Between Glyceraldehyde 3-Phosphate and 3-Phosphoglycerate Do

Question

The steps of glycolysis between glyceraldehyde 3-phosphate and 3-phosphoglycerate do NOT involve: A) ATP synthesis. B) catalysis by phosphoglycerate kinase. C) oxidation of NADH to NAD⁺. D) the formation of 1,3-bisphosphoglycerate. E) utilization of Pi.

Accepted Answer

The step between glyceraldehyde 3-phosphate and 3-phosphoglycerate involves the conversion of glyceraldehyde 3-phosphate to 1,3-bisphosphoglycerate by the enzyme glyceraldehyde 3-phosphate dehydrogenase. This step also involves the oxidation of NADH to NAD+. However, there is no formation or utilization of NADPH or P_i in this step. Additionally, ATP is synthesized in the later steps of glycolysis, but not in this specific step. Phosphoglycerate kinase catalyzes the conversion of 1,3-bisphosphoglycerate to 3-phosphoglycerate.