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8 Cards in this Set
- Front
- Back
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Combined media |
Tests for multiple biochemical characteristics Ex: SIM, TSI |
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What is it called when an organism switches from fermentation to peptonozation |
Conversion |
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Biochemical characteristics |
Enzymatically propelled chemical reactions |
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SCA |
Food source: sodium—> hydrogen Enzymes: Citrate Indicator: bromethymol blue Green at or below 6.9-acidic Blue- at or above 7.6-basic |
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Urea |
Food: Urea, peptones, glucose Enzymes: urease Indicator: phenol red Peachy/yellow = acidic Red/pink = basic |
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SIM |
Food: sulfur reduction to hydrogen sulfide Enzyme: tryptophanase Indicator: DMABA |
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TSI |
Food: glucose, sucrose, lactose Enzyme: Indicator: phenol red Fermentation-acidic-yellow Peptonozation-basic-pink red |
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Inoculation for SIM |
Stab in and out the same path with needle to avoid fast positives for motility |
