When oxygen is present, cells can use aerobic respiration to recycle NADH. In this process, NADH is oxidized and its electrons are transferred to the electron transport chain (ETC) in the mitochondria. The ETC transfers these electrons through a series of electron carriers, creating a proton gradient across the mitochondrial membrane. This proton gradient is then used to generate ATP through oxidative phosphorylation.
During this process, NADH is converted back into its oxidized form, NAD+, as it donates its electrons to the ETC. NAD+ can then participate in glycolysis, the Krebs cycle, or other metabolic pathways to continue the production of ATP by accepting electrons and becoming NADH again.
In summary, when oxygen is present, NADH is recycled through the process of aerobic respiration, where it donates its electrons to the ETC and is eventually converted back to NAD+.
Fermentation is necessary to recycle NADH under anoxic conditions. How does an 88 to get recycled when oxygen is present?
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