The oxidative phosphorylation of ATP could not occur in cellular respiration without oxygen because oxygen is the last electron acceptor in the electron transport chain.
The process of the electron transport chain refers to a key issue in oxidative phosphorylation (the third stage of cellular respiration), which is used to create ATP.
Therefore, with this data, we can see that the process of the electron transport chain is required to produce ATP during cellular respiration and oxygen is the electron acceptor of this process.
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