MICR 200B Study Guide - Final Guide: Eukaryote, Critical Role, Beta-Lactam
15 Jan 2018
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Document Summary
Only a small percentage of microbes can be cultured and this limits the knowledge we have of them (1 gram of soil = 1 billion bacteria, 1% of which can be cultured) The environment is a vast depository of microbes that interact with the environment, with each other, and with higher plants and animals. Plants and animals are easier to classify as a species- based off of their ability to produce viable offspring. Archae: don"t breed so they need a different de nition for a species. Only 5000 species have been described to date. Haeckel (1866) made the original tree, with plantae, protista, and animalia suborders. Whittaker (1967) made the tree with monera, protista, plantae, fungi and animalia. Common method for determining phylogeny of prokaryotes today is by the sequencing of. 16s ssu rrna (as determined by carl woese and george fox) The 30s subunit of the ribosome contains 16s rrna and 21 ribosomal proteins.
