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14 Cards in this Set
- Front
- Back
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Virulence factor
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enables it to cause disease
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Pathogen
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ability to cause disease
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Virulence
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degree of pathogencity
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Prokaryotes
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nucloid - lacks a nuclear membrane, dna is spread througout the cell.
single circular chromosome lack mitosis ribosomes = 70s in size |
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grams positive
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thick peptidoglycan layer, thick cell wall
teichoic acid lack LPS lack lipoprotein and phospholipid |
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gram negative
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thin peptidoglycan layer, thin cell wall
lacks teichoic acid outer membrane contains lps contains lipoprotein and phospholipids |
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lysozyme
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breaks bond betwen muramic acid and glucosamine in peptidoglycan, ie gram +
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spheroplasts
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bacteria with some cell wall remaining
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L-forms
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bacteria grown in the precence of pnc
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mycoplasma
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only naturally occuring bacteria without a cell wall
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prokaryotic ribosomes
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70s further split to 50s and 30 s
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transformation
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dna from donor cell leaks out into solution and enters competent recipient cell
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plasmids
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small circular piece of dna that can exist in the cytoplasm or be integrated into the chromosome
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transponsons
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jumping genes, can move to another part of the chromosome.
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