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MBI121-3spr08notes - Figure 1.13 Magnification vs...

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Magnification vs. Resolution Figure 1.13
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(Fig. 3.9) Light microscopy uses visible light to resolve objects Structure of the bright- field microscope
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Light microscopy has other optical configurations Phase-contrast microscopy Dark-field microscopy Fluorescence microscopy
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Electron microscopy provides detailed images of cells and cell parts Electron microscopy design Transmission electron microscope (TEM) Scanning electron microscope (SEM) Fig. 3.9
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Scientific names of microbes Strain vs. Species Describe shape, who discovered species, characteristics Escherichia coli - Escherich’s bacillus, found in colon Salmonella typhi - Salmon’s bacillus, causes typhoid fever Saccharomyces cerevisiae - sugar fungus, ferments beer (Latin origin)
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Microbial Classification 1859 - Origin of Species by Charles Darwin 1866 - Haeckel proposed new kingdom: Protista (primitive, first) Fungi, protozoans, algae, bacteria fungi were not plants - no chlorophyll 1940s - microscope advances pushed classification 1969- Robert Whittaker proposed a 5 kingdom classification
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