BIOL 2905 Midterm: MIDTERM 2 STUDY NOTE PART 3
16 Nov 2016
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Biol 2905 microbiology midterm 2 study sheet part 3. Covered by an extension of the cell membrane. A long, sheathed cylinder containing regularly spaced microtubules in a. Microtubules slide past each other creating a whipping motion that. Appendages for moving: cilia requires the expenditure of energy: cilia are similar in structure to flagella, but are shorter and more numerous. Only found in a single group of protozoa (single celled eukaryotes) and in certain animal cells. Also function as feeding and filtering structures. Glycocalyx: the outermost layer that comes into direct contact with the environment, usually composed of polysaccharides and appears as a network of fibers, a slime layer or a capsule, functions: Protection (acid/salts), adherence of cell surfaces, reception of signals from other cells and the environment. Cell wall: protozoa and helmithns (small worms/parasites) do not have cell walls, cell walls of fungi (mushrooms and yeast) Rigid and provide structural support and shape.
