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28 Cards in this Set
- Front
- Back
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3 methods for evaluating antimicrobials are _____ ____ test, ____ ____ concentration, & ____ ____ test
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phenol coefficient - minimum inhibition - disc diffusion
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(MIC) ____ ____ ____ & (MBC) ____ ____ ____
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minimum inhibition concentration - minimum bactericidal concentration
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a dilution test is needed in the ____ ____ test
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phenol coefficient
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3 indicator bacteria that are always used for the phenol coefficient test
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salmonella typhi - staphylococcus aureus - pseudomonas aeruginosa
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in phenol coefficient test, broth cultures are exposed to ____ of ____ ____ for a standard time
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dilutions - test chemicals
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lowest effective dilution is compared with that of ____
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phenol
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if phenol coefficient greater than 1, chemical is ____ (more/less) effective
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more
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if phenol coefficient less than 1, chemical is ____ (more/less) effective
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less
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a dilution test is a type of minimum ____/____ ____ (MIC/MBC) test
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inhibitory/bactericidal concentration
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MIC/MBC are used to test several ____
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bacteria
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MIC/MBC test use broth cultures that are exposed to ____ ____ ____ for a standard time
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dilute test chemicals
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greatest dilution with no growth is the ____
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MIC
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lowest dilution after sub culture into fresh medium with no chemicals is the ____
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MBC
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the lowest concentration (max dilution) that will inhibit an organism is a ____
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MIC
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the lowest concentration (maximum dilution) that will kill an organism is a ____
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MBC
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a commercially prepared chemical strip is called a commercial ____ ____ or e test
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antibiotic MIC
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commercial antibiotic MIC (e-test) creates a gradient of ____ ____ when placed on an agar plate
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antibiotic concentration
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sensitivity to antibiotics is called a ____ ____ test
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kirby bauer
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in a sensitivity test, ____/____ are seeded onto a petri plate
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bacterium / pathogen
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filter paper disc impregnated with different ____ ____/____ are placed onto the agar surface
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chemical agents - antibiotics
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in sensitivity to antibiotics test ____ ____ are evaluated by size (diameter, mm) of zones of inhibition
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chemical agents
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____ are compared with standard values
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diameters
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3 things that allow scientists to classify a pathogen (S I R)
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sensitive - intermediate - resistant
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