Which statement about the role of oxygen in the electron transport chain is FALSE?
A) Oxygen is the ultimate receptor of electrons.
B) Oxygen is reduced to water during oxidative phosphorylation.
C) We inhale oxygen so that it can be used to accept electrons.
D) Catabolism is called cellular respiration because it uses oxygen.
E) Oxygen is released as carbon dioxide through exhalation.

Question

Quizplus · Accepted Answer

Oxygen is not released as carbon dioxide through exhalation. Instead, oxygen is used in the electron transport chain and converted to water, while carbon dioxide is a byproduct of the citric acid cycle and is exhaled.

Which Statement About the Role of Oxygen in the Electron