An organism that can use gaseous oxygen in metabolism and has the enzymes to process toxic oxygen products is a(n) ______.

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An aerobe is an organism that can use oxygen in their metabolism and has the enzymes to process toxic byproducts of oxygen metabolism. This differentiates them from obligate anaerobes, which cannot survive in the presence of oxygen, and facultative anaerobes, which can survive in either aerobic or anaerobic conditions. Microaerophiles require oxygen but at low concentrations, so they may not necessarily have the enzymes to process toxic oxygen byproducts.

An Organism That Can Use Gaseous Oxygen in Metabolism and Has