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Unformatted text preview: Move the cell Intermediate Filaments Provides mechanical support Microtubules Microtubules are small cylindrical fibers that change in length by assembling (polymerizing) and disassembling (depolymerizing). They are made of a protein called tubulin. Tubulin dimers are arranged to form a long hollow cylinder. The fibers are lengthened and shortened as tubulin dimers assemble or disassemble from one or both ends of the filament. The assembly of microtubules in many cells is controlled by an area near the nucleus called the centrosome or microtubule organizing area. . Microtubules act as tracts along which organelles can move. For example, they are associated with movement of vesicles from the Golgi complex to the plasma membrane . Microtubules are responsible for the movement of cilia and flagella. They move the chromosomes during cell division....
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