MCQ IN MEDICINE

Detailed explanation-1: -Bacterial flagella are helically shaped structures containing the protein flagellin. The base of the flagellum (the hook) near the cell surface is attached to the basal body enclosed in the cell envelope. The flagellum rotates in a clockwise or counterclockwise direction, in a motion similar to that of a propeller.

Detailed explanation-2: -Flagella. Bacterial flagella are long hairy structures that help in their locomotion. They are found at either or both ends of a bacterium or all over its surface.

Detailed explanation-3: -E. coli and Salmonella use flagella viewable from the cell exterior as a thin, long, helical filament (Figure 1a). On the other hand, the flagella of spirochetes reside within the periplasmic space, and so they are called periplasmic flagella [7].

Detailed explanation-4: -A flagellum (/fləˈdʒɛləm/; PL flagella) is a hairlike appendage that protrudes from certain plant and animal sperm cells, and from a wide range of microorganisms to provide motility.