Final answer:
In aerobic respiration, the final electron acceptor is an oxygen molecule, which is found at the end of the Electron Transport System (ETS).
Step-by-step explanation:
In aerobic respiration, the final electron acceptor is an oxygen molecule, O2. The electron acceptor can be found at the end of the Electron Transport System (ETS) during cellular respiration. The ETS is a series of chemical reactions that occur in the inner membrane of the mitochondria in eukaryotic cells, or on the inner part of the cell membrane in prokaryotic cells. The electron acceptor in aerobic respiration is crucial for the generation of ATP through oxidative phosphorylation.