EVERYDAY SCIENCE

Detailed explanation-1: -The reactants of the electron transport chain are NADH, FADH2, protons, ADP, and oxygen. NADH and FADH2 are electron carriers produced during glycolysis and the Citric Acid Cycle that donate electrons to the protein complexes in the inner membrane of the mitochondria.

Detailed explanation-2: -Finally, oxidative phosphorylation and the electron transport chain use the reactants ADP, NADH, FADH2, and O2.

Detailed explanation-3: -Oxygen is the terminal electron acceptor in the mitochondrial electron transport chain and therefore is required for the generation of energy through oxidative phosphorylation.

Detailed explanation-4: -oxygen is used in the electron transport chain (ETC) as the final electron acceptor. In ETC, the bulk of the ATP is produced where the process involves the series of protein complexes that transfer electrons through redox reactions along with the transfer of H + ^+ + across the membrane.

Detailed explanation-5: -Explanation: Oxygen is the final electron acceptor in the electron transport chain, showing the need for aerobic conditions to undergo such a process. ATP is produced as a product of the electron transport chain, while glucose and CO2 play a role in earlier processes of cellular respiration.