Chapter 11e - Gram Positive Bacteria Grouped based on C + G...

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Unformatted text preview: Gram Positive Bacteria Grouped based on C + G ratio (nitrogen bases cytosine and guanine) Divided into 2 Phyla Firmicutes (low C + G ) Actinobacteria (High C + G) Low G + C ratio Includes endospore forming bacteria and wall-less bacteria Firmicutes Clostridiales Clostridium Obligate anaerobes Endospores C. tenani tetanus C. botulinum - botulism C. perfringens - food borne illness and gas gangrene Endospore Epulopiscium Very large bacteria Huge genome Endosymbiont in surgeonfish Reproduces by releasing cells through slit Bacillales Includes both rods and cocci Includes medically/ commercially important genera Bacillus Endospore-producing rods Aerobe or facultative anaerobe B. anthracis- anthrax B. thuringiensis insecticide B. cereus- food borne illness Staphylococcus- grapelike clusters of cocci facultative anaerobes S. aureus Yellow pigmented colonies common inhabitant of skin and the nasal cavity grows in foods with high osmotic pressure surgical wound infections toxin - toxic shock syndrome enterotoxin - induces vomiting exfolatin toxin scalded skin syndrome MRSA...
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This note was uploaded on 02/21/2008 for the course BIOLOGY 380 taught by Professor Littlejohn during the Spring '06 term at University Of Southern Mississippi .

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Chapter 11e - Gram Positive Bacteria Grouped based on C + G...

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