MICROBIO 310 Lecture Notes - Lecture 4: Archaea, Lipopolysaccharide, Peptidoglycan
15 Sep 2017
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Microbio310 - lecture 4 - microbial membrane structure. The ultimate limit of what we are able to see with a microscope is dictated by resolution. The gram stain is widely used in microbiology. A differential stain is called differential because it does not stain all the cells the same color. Cells fluoresce naturally (autofluorescence) or after they have been stained with a. Widely used in microbial ecology for enumerating bacteria in natural samples fluorescent dye like dapi. Electron microscopes use electrons instead of photons to image cells and structures. Major cell morphologies are coccus (spherical or ovoid), rod (cylindrical), and spirillum. Many variations on basic morphological types exist. Compared to eukaryotes, bacteria and archaea have higher volume-to-surface ratios that allow higher nutrient exchange and growth. The composition of membranes include fatty acids that point inward to form a. Hydrophilic portions remain exposed to the external environment or the cytoplasm.
