MICRB265 Lecture Notes - Prokaryote, Periplasm, Cell Nucleus
17 Sep 2013
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Vibrio bent rod shape; like a comma. Vibrio cholera diarrhea and intestinal disease. Arrangments: pairs = diplo, group of 4 = tetrad, clusters = staphylo, chains = strepto. Caulobacter - has stalk to attached to water surface and flagella to move through water (changes cell shape: model system of a complex prokaryote. Filamentous like strands of hair: photosynthetic but does not produce o2, ancient and therefore cannot compete well with algae. That"s why you only find filamentous cells in places where algae cannot grow! Monomorphic having only one form during whole span of lifetime. Pleomorphic multiple shapes available for cell to turn into. During growth changes from rods to cocci (shape change makes it easier for it to attain food) Bacillus cereus vegetative cells to spores (when environmental conditions are not favourable) Polysaccharides: present in cell walls and in some storage granules. Lipids: part of cytoplasmic membrane, part of cell wall, storage granules.
