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15 Cards in this Set
- Front
- Back
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what are the 5 phylum of firmicutes?
what are the 3 phylum of actinobacteria? |
ssbcm
streptococcus staphylococcus bacillus clostridium mollictutes SHM streptomyces heliobacter mycobacterium |
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Streptococcus
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cocci chains
complex nutritional req release enzymes to break down org material tolerant anerobes - grow by fermentaion of sugars even in the presence of oxygen |
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notable streptococcus pathogens
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streptococus pyogenes- scarlet fever
streptococcus pneumoniae |
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staphylococcus
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grape clusters
fac aerobes- no o2 they ferment to make lactic acid skin and mucous membranes - s aerous non pathogenic and some can cause food poisoning |
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bacillus
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aerobic rod shaped
form endospores |
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what are the 2 steps to endosposre growth?
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1-veg growth - normal period of growth
2-sporulation- period of endospore formation switch bt two occurs when nutrients deplete |
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most notable bacillus pathogens
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bacillus anthraxis
bacillus cereus- food poisoning bacillus thuringiensis-insect pathogen |
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clostriduium
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obligate anerobes lack e chain
get energy thru substrate level phosphorylation strickland rxn endospores |
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most notable clostriduium pathogens
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c.tetani
c.perfringens-gas gangrene c.botulism |
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mollicutes
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no cell wall
related to clostridium complex nutritional req-path or parasitic myco. pneumoniae - pneumonia |
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phylum actinobacteria
mycobacteriium |
non motile
rod shaped with brancing mycelia make mycolic acids that are linked to peptidoglycan |
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nost notable mycobacterium pathogens
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m. tuberculosis
m, leprae |
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streptomyces
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mycelial soil bacteria - produce antiobiotics
sporolate as differentiation process |
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what are the sporulation steps?
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cells grow as branching substrate mycelium
nutrient depletion - substrate growth stops and aerial hyphae emerge and grow verticaly antibiotics produced(to kill competeitotrs) aerial hyphae diff to chains of spores |
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heliobacter
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only PS gram + bacteria known
photoheterotrophs - uses organic molecules can't grow autotrophically make endospores |
