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.

Detailed explanation-2: -Without oxygen, organisms can split glucose into just two molecule s of pyruvate. This releases only enough energy to make two ATP molecules. With oxygen, organisms can break down glucose all the way to carbon dioxide. This releases enough energy to produce up to 38 ATP molecules.

Detailed explanation-3: -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-4: -Explanation: This is because during aerobic respiration MORE ENERGY IS RELEASED by our body which is about 38 ATP molecules whereas during anaerobic respiration only 2 ATP molecules are released. Mitochondria is indeed the powerhouse of the cell as creates the ATP molecules required for releasing energy in our body.