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Specialized structures associated to movement A. Flagella B. Cilia C. Pseudopodium D. Other mechanisms

Specialized structures associated to movement

A. Flagella
B. Cilia
C. Pseudopodium
D. Other mechanisms

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Answer #1

A. flagella

Bacterial flagella are helically shaped structures containing the protein flagellin. The base of the flagellum (the hook) near the cell surface is attached to the basal body enclosed in the cell envelope. The flagellum rotates in a clockwise or counterclockwise direction, in a motion similar to that of a propeller.

Prokaryotic flagella run in a rotary movement, while eukaryotic flagella run in a bending movement. The prokaryotic flagella use a rotary motor, and the eukaryotic flagella use a complex sliding filament system.

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