Give the structure and function of bacteria flagellum

Dear student

Bacterial flagellum is a hair like appendage that arises from cell wall. It is composed of Flagellin protein.

​​​​​​Structure:-
it is composed of three parts:-

1. Basal body - there are 4 rings namely L, P, M and C surrounding the central rod which is anchored to cell wall and cytoplasmic membrane.

2. Hook - it supports filament and and connect it to motor proteins.

3. Filament - thin and flat hair like structure which arises from hook.

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Function :-

its main function is for motility that is help in moving the bacterial cell and this movement is caused by rotating the flagella either clockwise or anti clockwise.

Regards
 

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