Essay on The Effect Of Microtubules On The Function Of A Cell

1932 Words Dec 2nd, 2014 8 Pages
Microtubules, which are made of protein subunits called tubulin, are the thickest of all three cytoskeletal filaments. Microtubules are mainly serving as the paths along which vesicles are guided in their travels to various destinations, and are responsible for associating with motor proteins attached to the vesicles. Microtubules can also expand or shrink in length in order to establish dynamic structures that can efficiently change the internal organization of the cell, and capture organelles through the cytosol. Intermediate filaments are made up of the protein keratin. Their primary function is to strengthen the internal structure of a cell. Microfilaments are the smallest among the three cytoskeletal filaments. They consist of protein actin. Microfilaments are dynamic structures that can rapidly disassemble or assemble themselves, and thus microfilaments enable the cell to move efficiently. Cilia and flagella that are made of microtubules are critical in cellular locomotion. Cilia move back and forth like the oars of a rowboat while eukaryotic flagella generate propulsion through the waves passed down to them. In addition to cell movement, cilia can stir up the surroundings in order to maximize the absorption of nutrients and to propel wastes away. Cilia and eukaryotic flagella are both covered by a lipid bilayer. Prokaryotic flagella have a different internal structure, and function rather differently from eukaryotic flagella. Prokaryotic rotate like propellers to…

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