AP BIOLOGY

Detailed explanation-1: -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-2: -Oxidative phosphorylation. At the end of the electron transport chain, oxygen accepts electrons and takes up protons to form water.

Detailed explanation-3: -Carbon dioxide and water are created as byproducts. The overall equation for aerobic cellular respiration is: In cellular respiration, glucose and oxygen react to form ATP. Water and carbon dioxide are released as byproducts.

Detailed explanation-4: -During the electron transport chain, the oxygen is the final acceptor of electrons. Oxygen after accepting the electron turns reactive and undergoes the reduction with the protons present in the matrix. Later this combination forms metabolic water.

Detailed explanation-5: -Cellular respiration is an oxidative process whereby an electron donor is oxidized and oxygen is reduced to produce carbon dioxide, water, and energy [3].