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Unformatted text preview: Centrioles are self-replicating. A flagellum or a cilium is formed from a basal body, which is identical to centrioles and is embedded in the plasma membrane. There is a transition zone where the two microtubules of the cilia/flagella join a third microtubule forming the basal body ring. (Some prokaryotic cells also have flagella, but their structure and mode of generating motion are very different from the eukaryotic flagella.) Pseudopodia External locomotion can also be generated by internal microfilaments that align to form lobes of cytoplasm called pseudopodia. Pseudopodia project outward in one direction while other regions of the cell contract, generating movement. Pseudopodia are also used to surround and capture prey, a process called phagocytosis. The protist Amoeba and white blood cells move by pseudopodia and feed by phagocytosis....
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This note was uploaded on 12/29/2011 for the course BIO 151 taught by Professor Edwards during the Spring '10 term at SUNY Stony Brook.
- Spring '10