MUSCLE PHYSIOLOGY

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: -The final electron acceptor is oxygen (O2), it has a high electronegativity and accepts low-energy electrons. Hydrogen is combined with oxygen, forming water as the final product.

Detailed explanation-3: -Stage 3–Electron Transport Chain In the final stage of cellular respiration, oxygen combines with the electrons and protons to form water.

Detailed explanation-4: -Oxygen acts as the final electron acceptor in the electron transfer chain, resulting in the formation of H2O. This is essential because without it, the electron transfer chain cannot function resulting in a lack of oxidative phosphorylation in the inner membrane of the mitochondria.

Detailed explanation-5: -The electron transport chain is a series of electron transporters embedded in the inner mitochondrial membrane that shuttles electrons from NADH and FADH2 to molecular oxygen. In the process, protons are pumped from the mitochondrial matrix to the intermembrane space, and oxygen is reduced to form water.