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18 Cards in this Set
- Front
- Back
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Carbohydrate Fermentation
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The process in which an organic molecule acts as an electron donor (becomes oxudized) and one or more of its products acts as the final electron acceptor (FEA)
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A lactose fermenter is:
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An organism which splits the disaccharide lactose into the monosaccharides glucose and galactose and then ferments the monosaccharides.
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The term "fermenter" can be assumed to include
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The initial hydrolysis and or/conversion reactions.
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Fermentation of glucose begins with the production of ____.
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Pyruvate
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The production of pyruvate during glucose fermentation is accomplished through ____.
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Glycolysis
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The end products of pyruvate fermentation include: ____. Specific end products depend on the organism and substrate fermented.
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alcohols, organic acids, and hydrogen of carbon dioxide gas.
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The Methyl Red test detects what is called a ______.
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Mixed Acid Fermentation
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The Voges-Proskaur test identifies bacteria that are able to produce ____ as part of a ________ fermentation.
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acetoin, 2-3 butanediol fermentation.
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The MR-VP Medium stands for ______ and _____.
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Methyl Red, Voges-Proskaur
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Phenol Red is ____ below 6.8, ____ above 7.4, and ____ inbetween.
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Yellow, Magenta, Red
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A ____ is added to each PR Broth tube to detect the production of gas.
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Durham Tube
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____ is used to differentiae members of Enterobacteriaceae.
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PR Broth
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In the PR Test, dark red color means that
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Degradation of peptone; alkalike end products.
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The nitrate reduction test is used to find ____
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Whether an organism denitrifies nitrate or contains nitrate reductase (can turn nitrate straight to nitrite).
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Nitrate broth is a ____ media and contains peptone, beef extract and ____.
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undefined, potassium nitrate
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In the Citrate Test, _____ is the only carbon source, and ____ is the only nitrogen source.
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Sodium Citrate, Ammonium Phosphate
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The Citrate Test is used to distinguish between members of the group ______ and differentiate them from other gram ____ rods.
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Enterobacteriaceae, gram -
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In the Citrate Test, what is the color indicator?
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Bromthymol Blue
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