Filament, hook and basal body are the parts of

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Motility in Bacteria is due to presence of thin extensions called as Flagella. The number and arrangement of flagella varies in different types of bacteria. Flagella is made up of three main parts: Filament: Longest and main part that extends from cell surface to the outside and is composed of flagellin protein. Hook: Structure near the cell surface. Basal body: A system of rings embedded in cell envelope. The eukaryotes also possess flagella but these are structurally different from that of the prokaryotic flagell