AP BIOLOGY

Detailed explanation-1: -Oxygen is required in the cellular respiration in the electron transporter chain. It serves as the final electron acceptor of the electron transport chain facilitating the movement of electrons down the chain hence producing the ATP or adenosine triphosphate.

Detailed explanation-2: -The electron transport chain produces adenosine triphosphate, the main cellular energy. Oxygen acts as a final electron acceptor that helps move electrons down a chain that results in adenosine triphosphate production.

Detailed explanation-3: -Oxygen is the final electron acceptor in this respiratory cascade, and its reduction to water is used as a vehicle by which to clear the mitochondrial chain of low-energy, spent electrons. The enzyme that catalyzes this process, cytochrome oxidase, spans the mitochondrial membrane.

Detailed explanation-4: -Aerobic respiration uses the oxygen gathered during the process of anatomical respiration (or breathing) to facilitate ATP synthesis. In this role, oxygen is an electron acceptor within the electron transport chain which synthesizes ATP from nutrients.