Facultative anaerobes usually possess:

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Facultative anaerobes are capable of both aerobic and anaerobic respiration. This means that they can use oxygen if it is available, but can also survive in oxygen-deprived environments. As a result, they need to have both catalase and superoxide dismutase enzymes to deal with reactive oxygen species that can be produced in aerobic respiration. Catalase breaks down hydrogen peroxide into water and oxygen, while superoxide dismutase breaks down superoxide radicals into hydrogen peroxide and oxygen. Without these enzymes, the reactive oxygen species can cause oxidative damage to the cell.

Facultative Anaerobes Usually Possess