BLG 151 Lecture Notes - Lecture 2: Rna World, Morgen, Phylogenetic Tree
25 Nov 2016
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Document Summary
Chapter 1: the evolution of microorganisms and microbiology. Microbiology studies microscopic acellular + cellular organisms unicellular or multicellular no highly differentiated tissues. Three domains = bacteria, archaea and eukarya. Domain bacteria + archaea = prokaryotic microorganisms. Domain eukarya = eukaryotic microbes (protists and fungi) [viruses = proteins + nucleic acids, viroids = rna, satellites = nucleic acid + often rna, and prions = proteins] = acellular entities (not part of the domain but separate system). Most populous + diverse group of orgs. Play a major role in recycling implements (c, n, o) Source of nutrients and some carry out photosynthesis. Benefit society by their production of food, beverages, antibiotics, and vitamins. Some cause disease in plants and animals. Mbio = the foundation of all biological sciences. Morgs involved in converting nh3 to gas, rain, ground and then cycle continues. Small orgs + acellular entities = microscopic, thus they are simply constructed + lack highly differentiated cells + distinct tissues.
