Classification of Microorganisms

Classification of Microorganisms - Classification of...

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Classification of Microorganisms three domains of organisms (developed by Carl Woese, 1978) o bacteria (cell walls contain peptidoglycan, no true nucleus) o archae (cell walls, if present, do not have peptidoglycan, no true nucleus) o eukarya (true membrane bound nucleus) Protists/ protozoan – slide molds, protozoa, algae Fungi – yeasts, molds, mushrooms Plants – mosses, ferns, conifers, flowering plants Animals – sponges, worms, insects, vertebrates HISTORY OF MICROBIOLOGY First Observations Robert Hooke (1665) first defined life’s smallest structural unit as a cell, marked the beginning of cell theory Cell theory – all living things are composed of cells Antoni van Leeuwenhoek (1673 thru 1723) describe "animalcules" in water-based substrates (we call these animalcules bacteria and protozoa) Debate over Spontaneous Generation after discovery of these small creatures, scientists become interested in where these organisms originate until the 1850’s scientists believe in spontaneous generation, the formation of new life
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This note was uploaded on 01/23/2012 for the course MCB MCB2010 taught by Professor Smith during the Fall '09 term at Broward College.

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Classification of Microorganisms - Classification of...

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