NATS 1670 Chapter Notes - Chapter 1: Peptidoglycan, Saccharomyces Cerevisiae, The Modern Age
23 Oct 2012
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{microorganisms/microbes} an organism or virus too small to be seen without a microscope. {taxonomic system} a system for naming plants and animals and grouping similar organisms together. {eukaryote} is any organism made up of cells containing a nucleus composed of genetic material surrounded by a distinct membrane. This includes animals, plants, algae, fungi, and protozoa. {prokaryote} is any unicellular microorganism that lacks a nucleus. {fungi} are eukaryotic organisms that have cell walls and obtain food from other organisms. {cell walls} a structural boundary composed of polysaccharide or protein chains that provides shape and support against osmotic pressure. {osmotic pressure} the pressure exerted across a selectively permeable membrane by the solutes in a solution on one side of the membrane. The osmotic pressure exerted by high-salt or high-sugar solutions can be used to inhibit microbial growth in certain foods. {mold} a typically multicellular fungus that grows as long filaments called hyphae and reproduces by means of spores.
