Bacteria and Archaea both have members that use sulfur compounds as a terminal electron acceptor.

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Both Bacteria and Archaea have members that use sulfur compounds as a terminal electron acceptor in anaerobic respiration. For example, some bacteria can use sulfate (SO42-) or elemental sulfur (S) as a final electron acceptor in the absence of oxygen, producing hydrogen sulfide (H2S) as a byproduct. Some archaea, such as methanogens, can also use sulfur compounds as electron acceptors in the reduction of carbon dioxide (CO2) to methane (CH4).

Bacteria and Archaea Both Have Members That Use Sulfur Compounds