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11 Cards in this Set
- Front
- Back
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Oxidase tests for what
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Pseudomonas Positive Dark Blue or
Enterobacteria nocolor change |
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Oxidase test is performed how?
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Applying microbes to paper and look for change.
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Oxidase uses what enzyme
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cytochrome oxidase
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CATALASE TEST is to determine what?
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+ Staphylococcus or Micrococcus lateus
or - Streptococcus |
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How perform CATALASE TEST?
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Apply microbes to paper and add hydrogen peroxide to see if bubbles. (positive)
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What enzyme is used in the catalase test?
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CATALASE
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Purpose of nitrate test is?
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To differentiate bacteria by ability to reduce nitrate or nitrite.
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What is first step in nitrate test.
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Inoculate tube of nitrate broth with bacteria and incubate to see if gas produce.
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What do in nitrate test if no gas produced?
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Add reagent A and B to double check no nitrate or nitrite.
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How read results from nitrate test?
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If after incubation have no gas, then must add reagent drops to see. If color change then is enterobacteria. I f no color change you must add zinc.
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What look for after adding Zinc in nitrate test?
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clear positive red negative
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