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28 Cards in this Set
- Front
- Back
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Define: ubiquitous
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omnipresent or everywhere
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Define: colony
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a macroscopic visible growth of microorganism on a solid culture medium, which may be derived from one or more cells. To visualize a colony, there must be at least 10⁶ cells. A pinpoint colony is referred to as a punctiform colony
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Define: nosocomial infection
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an infection derived from a clinical/hospital setting
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Define: fastidious organisms
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organisms that have complex nutritional requirements
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Define: resolution
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the ability to distinguish fine detail; also called resolving power
-resolution of microscope 0.2 micrometers |
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Define: fomites
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inanimate objects capable of absorbing, retaining and transmitting infectious agents
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Define: bacteriostatic
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inhibits growth & reproduction of bacteria
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Define: bactericidal
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kills microorganisms
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abbreviation: LM
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light microscope
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abbreviation: SEM
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scanning electron microscope
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abbreviation: TEM
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transmission electron microscope
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define: pathogenesis
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origin or birth of disease
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etiological agent: Staphylococcus aureus
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heat labile toxin
(gram negative organism) |
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etiological agent:
Salmonella spp. |
live organism growth
(gram negative organism) |
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etiological agent:
Shigella spp. |
live organism growth
(gram negative organism) |
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etiological agent:
Campylobacter jejuni |
live organism growth
(gram negative organism) |
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etiological agent:
E. coli |
live organism growth
(gram negative organism) |
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etiological agent:
Colustridium botulinum |
heat labile toxin
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define: labile
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heat it and it will breakdown
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Clostridium species
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-can form spores
-anaerobic (likes O₂) -produces a deadly neurotoxin |
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etiological agent:
Bacillus megaterium |
Media: bacteria
Materials: Nutrient Agar (NA) -creamy texture |
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etiological agent:
Saccharomyces cerevisiae |
Media: yeast
Materials: Sabarauds Dextrose Agar (SAB) -creamy texture -oval cells, round cells, almost football shaped |
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etiological agent:
Aspergillus niger |
Media: mold
Materials: Sabarauds Dextrose Agar (SAB) -tough to work with 0black stuff = spores |
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etiological agent:
Chlorella vulgaris |
Media: algae
Materials: Nutrient Agar (NA) + 0.5% glucose -photosynthetic cell -greenish tint, round cells |
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etiological agent:
Bacillus subtilis |
rod arrangement: single chains (palisade pattern)
spores (capable of making spores but may not be present) (gram positive organism) |
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etiological agent:
Staphylococuccus aureus |
-coccus irregular clusters
-fastidious organism (gram positive organism) |
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etiological agent:
Streptococcus faecalis |
(Enterococcus faecalis ← newer name)
-coccus, pairs, short chains (gram negative organism) |
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etiological agent:
Sarcina lutea |
coccus, box cars (pairs of 8)
-lutea means yellow (gram positive organism) |
