In aerobic respiration, the function of oxygen is to combine with:
A)pyruvate in glycolysis.
B)NADH in the citric acid cycle.
C)electrons and hydrogen at the end of the electron transport system.
D)lactate in glycolysis.

Question

Quizplus · Accepted Answer

Oxygen is the final electron acceptor in the electron transport chain in aerobic respiration. As electrons move down the chain, they ultimately combine with oxygen and hydrogen ions to form water. This process generates a proton gradient that is used by ATP synthase to produce ATP. Oxygen plays no direct role in glycolysis or the citric acid cycle. It is also not involved in the breakdown of lactate in glycolysis.

In Aerobic Respiration, the Function of Oxygen Is to Combine