How do motile bacteria differ from other types of bacteria?

The vast majority of motile bacteria have the ability to move due to the flagellum structure (plural flagella) on the bacterium, whereas bacteria that are non-motile do not have a flagellum structure. read more

Gram-positive bacteria lack an outer lipopolysaccharide layer, so only the P ring anchors in those bacteria. Motile bacteria that do not have flagella: Interestingly, a few certain types of bacteria have the ability to glide on surfaces despite having no flagella. read more

Most motile bacteria move by the use of flagella, rigid structures 20 nm in diameter and 15-20 µm long which protrude from the cell surface, e.g. the Chromatium cells in the video. In some bacteria, there is only a single flagellum – such cells are called monotrichous. read more