Each of the following can be the final electron acceptor in bacterial aerobic or anaerobic respiration except Each of the following can be the final electron acceptor in bacterial aerobic or anaerobic respiration except Fe3 . sulfur. oxygen. pyruvate. hydrogen ions.

Explanation:

Pyruvate cannot be a final electron acceptor  in bacterial aerobic or anaerobic respiration except Fe3+,rather, pyruvate is an electron donor. Whereas Sulfur is the electron acceptor in anaerobic respiration(respiration in absence of oxygen). Hydrogen ions, Fe3+ and oxygen are final electron acceptor in aerobic respiration.( Respiration in presence of oxygen).

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