Question

A bacterial flagellum is composed of

• A. Filament, hook and basal body
• B. Vesicles, tubules and lamellae
• C. Pili, Fimbriae and filament
• D. Hook, tubules and Fimbriae

Answer 1

The Correct Option is A

Answer (a) Filament, hook and basal body

Answer 2

Explanation:

• Flagellum is a hair-like microscopic organelle used for locomotion by cells and microorganisms.
• The bacterial flagellum is a filamentous protein structure found in bacteria, eukaryotes and archaea.
• Flagellum mainly functions in propelling a cell through liquid, to increase reproduction rates and sense changes in the environment.
• It consists of a basal body which is present within the cell membrane.
• It is attached to the flagellum's hook, which is connected to the long filament.
• The microtubule rings that make up the basal body are arranged in a rod-like configuration and the small, curved tubular structure known as the flagellar hook joins the long filament to the basal body or flagellar motor.
• The hook's primary job is to transfer the motor torque to the helical filament, allowing it to move in a different direction for various purposes.