In cell respiration,oxygen is required for:
A)glycolysis
B)glycolysis and the Krebs cycle
C)the Krebs cycle and the cytochrome transport system
D)the cytochrome transport system and glycolysis

Question

Quizplus · Accepted Answer

Oxygen is required for the Krebs cycle and the cytochrome transport system to occur during cellular respiration. Glycolysis can occur in the absence of oxygen, but the subsequent steps of cellular respiration require oxygen as the final electron acceptor in the electron transport chain. Therefore, options A and B are incorrect as they only mention glycolysis as requiring oxygen. Option D is also incorrect as the cytochrome transport system requires oxygen as well.

In Cell Respiration,oxygen Is Required For