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flagellum

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flagellum

(Plural flagella) small hairlike organ on the surface of certain cells. Flagella are the motile organs of certain protozoa and single-celled algae, and of the sperm cells of higher animals. Unlike cilia, flagella usually occur singly or in pairs; they are also longer and have a more complex whiplike action.

Each flagellum consists of contractile filaments producing snakelike movements that propel cells through fluids, or fluids past cells. Water movement inside sponges is also produced by flagella.



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Ponder first the bacterial flagellum (or propeller), which consists of approximately thirty distinct proteins, each of which is required for movement.
The Best American Science Writing 2006 by Krause, Kenneth W. / The Humanist
Now imagine this entire row of seats lifting up and rotating both clockwise and counter-clockwise, rising 20 feet in the air, faster and faster, until the arms and legs of its occupants are tossed around like flailing flagellum.
Sick zings: Jacko, bubbles & the Italian tit ride by Burnett, Michael / Thrasher
However, the mechanism of attachment may be redundant, and another molecule on the promastigote flagellum may be involved (11).
Distinct transmission cycles of Leishmania tropica in 2 adjacent ... by Warburg, Alon / Emerging Infectious Diseases
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