Which structures carry out cell movements?
microtubules and microfilaments
Microtubules and microfilaments are both types of cytoskeletal fibers found in eukaryotic cells.
Microtubules are long, hollow cylindrical structures composed of tubulin protein subunits. They play a crucial role in maintaining cell shape, intracellular transport, and cell division. They form the mitotic spindle during cell division, which separates the chromosomes.
Microfilaments, on the other hand, are thin, flexible fibers composed of actin protein subunits. They are involved in cell shape changes, muscle contraction, cell movement, and intracellular transport. They also play a role in the formation of cell-to-cell junctions and the maintenance of cell polarity.
Overall, both microtubules and microfilaments are essential components of the cytoskeleton, which provides structural support and is involved in numerous cellular processes.
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