Flagellum

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Examples of bacterial flagella arrangement schemes. A-Monotrichous; B-Lophotrichous; C-Amphitrichous; D-Peritrichous;

A flagellum (plural, flagella) is a long, whip-like projection of a cell composed of microtubules. They help propel cells and organisms in a whip-like motion. The flagellum of eukaryotes usually moves with an “S” motion, and is surrounded by cell membrane.

[edit] External links

• Molecular Machines Index of Illustrations, Graphics, and Animations
• Physics Today introduction to the bacterial flagellum by Howard Berg