EVERYDAY SCIENCE

Detailed explanation-1: -Bacterial flagella are filamentous organelles that drive cell locomotion . They thrust cells in liquids (swimming) or on surfaces (swarming) so that cells can move toward favorable environments.

Detailed explanation-2: -Flagellum is primarily a motility organelle that enables movement and chemotaxis. Bacteria can have one flagellum or several, and they can be either polar (one or several flagella at one spot) or peritrichous (several flagella all over the bacterium).

Detailed explanation-3: -The bacterial flagellar motor is powered by the transmembrane electrochemical gradient of ions, namely ion motive force (IMF) and rotates the flagellar filament to generate thrust to propel the cell body.

Detailed explanation-4: -Bacterial movement typically involves the use of flagella, although there are a few other possibilities as well (such as the use of type IV pili for twitching motility). But certainly the most common type of bacterial movement is swimming, which is accomplished with the use of a flagellum or flagella.

Detailed explanation-5: -Bacteria propel and change direction by rotating long, helical filaments, called flagella. The number of flagella, their arrangement on the cell body and their sense of rotation hypothetically determine the locomotion characteristics of a species.