BIOL 322 Study Guide - Quiz Guide: Bovine Spongiform Encephalopathy, West Nile Fever, Aids
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Micrometers=10^-6: the function of immersion oil is to allow more light to go to the image producing a clearer one, simple and differential staining procedures. Simple: simple stains make use of a singe stain to show the shape and structure of bacterial cells. Differential: staining procedures that result in certain organisms being stained one color while other stain another. Gram stain and acid-fast stain: acid dyes stain the background but not the bacterial cells. Useful for seeing size, shape, and orientation of bacteria. Basic dyes are positively charged so they are attracted to the negatively charged bacterial wall: transmission thin slices stained with heavy metals. Dna is not enclosed in a membrane in prokaryotes. Dna is not enclosed with histones in eukaryotes. Pros divide by binary fission: the glycocalyx is a viscous polymer that is external to the cell that is composed of peptin, polysaccharide, or both.
