Questions about "Hydrogen Sulfide Production"
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| When hydrogen sulfide is released by microorganisms, it is in the form of a ________. | gas
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| The production of hydrogen sulfide is an (aerobic/anaerobic) reaction | anaerobic
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| Under natural conditions, where might you expect to find hydrogen sulfide produced by microorganisms? | Black mud of swamps and lakes.
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| ________ is the color of a positive test for hydrogen sulfide. | Black
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| In order to produce hydrogen sulfide, microorganisms must possess the enzymes to attack ________-containing compounds | sulfer
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| The formation of the compound ________ ________ provides the basis for the detection of hydrogen sulfide. | iron sulfide
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| List four media used to detect hydrogen sulfide production: | peptone iron agar (PIA),
triple sugar iron agar (TSI),
kligler iron agar (KIA),
lead acetate agar
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| ________ ________ is the salt added to the medium to detect hydrogen sulfide production. | Ferrous salt
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| ________ ________ is the pH indicator used in KIA medium. | Phenol red
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| The acid colors of carbohydrate fermentation reactions must be read at ________ hours and at _____°C to be valid. | 24-48, 37
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| ________ and ________ are considered to be multipurpose types of media. | KIA (and) TSI
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| In the absence of sugars, does protein decomposition result in a shift toward the acid or alkaline side? | Protein decomposition results in alkaline pH. Acid production is the result of sugar fermentation.
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Created by:
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