Exemplar Problems

Question:

Explain the role of NADH in glycolysis and how it contributes to cellular energy production.

Answer:

NADH plays a critical role in glycolysis as an electron carrier. During glycolysis, the oxidation of glyceraldehyde-3-phosphate results in the formation of NADH molecules. These NADH molecules carry high-energy electrons to the electron transport chain (ETC) in the mitochondria, where they participate in oxidative phosphorylation. This process generates a proton gradient, ultimately leading to the production of ATP, the primary energy currency of the cell.