BIO 3124 Lecture Notes - Lecture 3: Sporangium, Flowering Plant, Clostridium
24 Sep 2016
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Microbiologists use the division domains o. Domains and kingdoms: all organisms originate from a common ancestor the progenote, organisms derived from the progenote are grouped in three domains or 6 kingdoms o. Basic taxonomic unit which represents a specific type of organism o. In the case of organisms that reproduce sexually the fundamental definition is reproductive compatibility o. This definition cannot be applied to several microbial species (such as bacteria) since they do not reproduce sexually. o. Definition of a species for microbiologists: a set of microbial strains that share several characteristics and which are significantly different from other sets of strains o. Species are identified by comparisons with known standard reference strains. Population of microbes resulting from a unique individual or a pure culture o. Different strains represent genetic variations of the same species o o o. Pathotypes: a disease-causing variant of a microorganism distinguishable from other members of its species by its virulence.
