Channel: Bacteria

Bacteria (/bækˈtɪəriə/; sg: bacterium) are ubiquitous, mostly free-living organisms often consisting of one biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria were among the first life forms to appear on Earth, and are present in most of its habitats. Wikipedia (CC BY-SA 3.0)

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