Question

________ bacteria are microbes that work in the absence of oxygen.

Answer 1

For most organisms, they use oxygen during cellular respiration as an electron acceptor. Basically, the oxygen accepts electrons and turns into water or carbon dioxide. Obligate anaerobic bacteria survive in the absence of oxygen because they use other molecules as their primary electron acceptors. Common electron acceptors used by anaerobic bacteria include sulfate, nitrate, iron, manganese, and mercury