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Answers. Best Answer: That is precisely what it requires as also denoted by the word oxidative phosphorylation. It happens through the electron transport chain process and the proton gradient it creates. Substrate level phosphorylation does not require oxygen, it occurs during glycolysis and the Krebs cycle.Source(s): greendawn Â· 7 years ago.t happens through the electron transport chain process and the proton gradient it creates. Substrate level phosphorylation does not require oxygen, it occurs during glycolysis and the Krebs cycle. Source(s): greendawn Â· 7 years ago.
Confidence votes 34.5K. Oxidative Phosphorylation Oxidative phosphorylation is a process by which most ATPs (~34-36) are produced in cellular respiration. Within the inner mitochondiral membrane, there is what is called and Electron Transport Chain/System (ETC/ETS).The ETC involves various enzymes, complexes, and cytochromes, which act as electron acceptors. Electrons are carried by two main molecules (NADH and FADH2) to the ETC from glycolysis and the Krebs Cycle.ithin the inner mitochondiral membrane, there is what is called and Electron Transport Chain/System (ETC/ETS). The ETC involves various enzymes, complexes, and cytochromes, which act as electron acceptors.