BIOL 1001 Lecture Notes - Lecture 8: Intermediate Filament, Cyclic Adenosine Monophosphate, Tau Protein
15 Feb 2018
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Biol 1001 lecture 8 structure and function of cells. Cytoskeleton: basis for cell shape and internal organization, enables organelle movement within cells and in some cases cell motility, main elements are microtubules, microfilaments and intermediate filaments. Intermediate filaments are macromolecular protein polymers that are involved in determining the shape of cells. Microtubules: microtubules composed of tubulin, microtubules can polymerize and depolymerize, are important in axonal transport axons are found in neurons. One microtubule protei(cid:374) k(cid:374)ow(cid:374) as tau protei(cid:374) (cid:373)odified duri(cid:374)g the progressio(cid:374) of alzhei(cid:373)er"s disease found in axons. Cytoskeleton: flagella and cilia: cross section of a cilium, structures for cell motility, flagellae of sperm cells, 9+2 internal structure of microtubules, arise from centrioles, cilia are also used to increase surface area in old factory receptor neurons. Involved in formation of microtubules: movement of chromosomes during mitosis and meiosis, are cylindrical structures, usually in pairs oriented at right angles to one another, are only found in animal cells and fungi.
