Question

The filament in bacterial flagellum can rotate by__________.

• A. ${360}^o$
• B. ${60}^o$
• C. ${120}^o$
• D. ${80}^o$

Answer 1

The correct option is A ${360}^o$

Bacterial flagella are helically shaped structures containing the protein flagellin. The base of the flagellum 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.

The flagella rotate clockwise as the bacteria rotate flagella clockwise at 360 degrees.