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Micro, lab 22

Micro 204, Hydrogen sulfide production lab 22

QuestionAnswer
When hydrogen sulfide is released form an organism it is in the form of a X. gas
The production of hydrogen sulfide is an X reaction. anaerobic
UNder natural conditions where you might expect find hydrogen sulfide produced by organisms? Mud in swamps, lakes, streams
X is the color of a positive hydrogen sulfide test. Black
In order to produce hydrogen sulfide, microorganisms must posses the enzymes to attack X containing compounds. sulfur
The formation of the compound X provides the basis for the detection of hydrogen sulfide. iron sulfide
List four media used to detect hydrogen sulfide production. peptone iron agar (PIA) kligler iron agar (KIA) triple sugar iron agar (TSI) lead acetate agar
X is the salt added to the medium to detect hydrogen sulfide production. Ferrous salt
X is the pH indicator used in KIA medium. Phenol red
The acid colors of carbohydrates fermentation reactions must be read at X hours at X degrees C to be valid. 24, 37
X and X are considered to be multipurpose types of media. Kligler iron and triple sugar, (KIA) and (TSA)
In the absence of sugars, does protein decomposition result on a shift toward the acid or alkaline side? The production of acid requires sugar
Medium used: Kligler iron agar (KIA)
Test positive means: black precipitate, means hydrogen sulfide was produced
Created by: kmorris8