Which process requires obligatory presence of oxygen during ATP production in human cells?
A) substrate level phosphorylation
B) oxidative phosphorylation
C) both oxidative and substrate level phosphorylation
D) None of the choices is correct.

Question

Quizplus · Accepted Answer

Oxidative phosphorylation is the only process that requires the obligatory presence of oxygen during ATP production in human cells. This is because oxygen serves as the final electron acceptor in the electron transport chain, which drives the production of ATP through the process of chemiosmosis. Substrate level phosphorylation does not require oxygen, and can occur under anaerobic conditions.

Which Process Requires Obligatory Presence of Oxygen During ATP Production