BIOL 201 Study Guide - Midterm Guide: Tobacco Mosaic Virus, Green Sulfur Bacteria, Gram Staining
20 Jul 2015
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3 domains of life with a common prokaryotic ancestor of all living things: bacteria, archaea, eukarya. Chlamydia and e. coli are more different genetically than animal and plants are. Whittaker"s "five kingdoms" tree of life concept was wrong (70"s-90s) Woese"s universal tree of life" based on rrna sequences (1990-: no single common ancestor (different than a single origin of life) Lecture outline: hyptheses on the origin of life, the species concept, systematics, taxonomy and phylogenetics, species names, viruses (virus = poison , taxonomic status, origin, structure, function, transmission, significance. Microspheres: simple aggregations of proteins; grow; bud-off; could form sheets (membranes) that enclose organic-rich media: if you disrupt them they will reform. All organisms have these traits through: organization based on cells bounded by semi-permeable membranes, atp-based energy currency, chemical machinery for the synthesis and degradation of essential molecules, heredity via nucleic acids. Early life: millar"s experiment suggesting potential for amino acid, sugar, and nucleic acid generation on early earth.
