Peritrichous bacteria are characterized by having what?

Peritrichous bacteria are characterized by having multiple flagella distributed over the entire surface of the bacterial cell. This arrangement allows them to move in a more coordinated and efficient manner compared to other flagellar arrangements. The presence of multiple flagella increases the bacteria's ability to navigate through their environment, enhancing motility in various conditions.

In contrast to other types of flagellar arrangements, such as polar arrangements (where flagella are located at one or both ends of the bacterium), peritrichous bacteria enjoy a broader area of propulsion which aids in their swimming capabilities. This flagellar configuration is particularly advantageous in environments like viscous liquids, where enhanced movement can significantly impact survival and colonization.