Bacteria are a type of biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria have a number of shapes, ranging from spheres to rods and spirals. Bacteria were among the first life forms to appear on Earth, and are present in most of its habitats. Wikipedia
Scientific name: Bacteria
Rank: Domain
Ph range: 6.5 - 7.0 cuny.edu