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13 Cards in this Set
- Front
- Back
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Gram negative stains_______ Gram positive stains _______ |
Gram neg stains pink Gram pos stains purple
*Mycobacteria & mycoplasma don't stain* |
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What is a virion |
Single infectious unit genome surrounded by protein capsid |
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What are prions |
Infectious proteins, no nucleic acid |
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Opportunistic pathogen |
Microbe can only cause disease when host immune system is compromised |
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What is a strict pathogen? |
Always considered pathogenic when isolated from patient |
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Lipopolysaccharide is what kind of toxin? |
Endotoxin |
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When examining culture from sterile specimens how do we classify pathogen? |
Anything that grows is pathogenic until otherwise proven |
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What are examples of sterile specimens? |
Blood, joint fluid & CSF |
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What are examples of non sterile specimens? |
Skin, oropharynx, gastrointestinal tract |
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What are examples of clean-cut contaminated specimens? |
Mid stream urine and sputum culture from lower airway |
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Blood afar and chocolate afar are examples of ____ media |
Non selective media |
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Macxonkey afar and sabouraud afar are examples of ___ media |
Selective |
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Compare pili to fimbriae |
Pili are thick, rodlike structures. Fimbriae are shorter, hair like structures - both contribute to adherence promotion in cells |
