. Describe the significance of Oxygen in aerobic respiration in the terms of ETS

Best Answer

The aerobic process of respiration occurs in the existence of oxygen and the function of oxygen is limited to the final phase of the process. Presence of oxygen is important as it drives the process by eliminating hydrogen from the system. Oxygen serves as the last hydrogen acceptor. In respiration, the energy of oxidation-reduction is used as opposed to the process of photophosphorylation where light energy is used for the generation of proton gradient that is required for phosphorylation. Hence it is called oxidative phosphorylation. Without oxygen, electrons cannot pass through the co-enzymes and in turn proton pump will not take place hence ATP will not be produced.

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