Flagella/Flagellium
Bacteria flagella are hair-like whip like structure allow cell to move.
Flagella stick out through cell wall.
Parts of flagella
1. Basal body; associated with cytoplasmic membrane and cell wall.
2. Short hook
3. Filament; long, helical structure extends from cell surface.
Types of Flagella
On basis of arrangement of flagella on bacteria cell.
1. Monotrichous: single polar (at end) flagella present.
2. Lophotrichous: multiple flagella present at one polar.
3. Amphitrichous: single or multiple flagella present at both poles.
4. Peritrichous; flagella present all around bacterial cell.
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