Question

Which of the following statements best describes the role of NAD+/NADH in glycolysis?

A) NADH is used to directly create the phosphoanhydride bonds in ATP.
B) NAD+ accepts electrons.
C) NADH accepts electrons during fermentation.
D) NADH is used primarily in substrate-level phosphorylation.
E) All of the above are correct.

Answer 1

NAD+ accepts electrons to become NADH in glycolysis, which can be used to produce ATP in later stages of cellular respiration.

Step-by-step explanation:

The role of NAD+/NADH in glycolysis is that NAD+ accepts electrons to become NADH. During the second phase of glycolysis, glyceraldehyde-3-phosphate dehydrogenase converts glyceraldehyde-3-phosphate into 1,3-bisphosphoglycerate, releasing an electron that is picked up by NAD+ to create NADH. The NADH molecules produced in glycolysis carry high-energy electrons that can be used to produce ATP in later stages of cellular respiration.