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MicrobiologyLab12

Questions about "Gram Stain"

QuestionAnswer
A preparation made by mixing a loopful of water and a bit of agar slant culture on a glass slide is called a ________. smear
The Gram stain is an example of a ________ (type) stain. differential
All members of the genus Escherichia would be expected to be Gram-________. negative
Endospores usually appear ________ in a complete Gram stain. clear or colorless
True or false: Gram-positive and Gram-negative cells have the same color after application of the first two Gram stain reagents. True.
Generally speaking, endospore-forming bacteria would be Gram-________. positive
Gram reactions are reliable only for cultures ______ hours old or younger. 24
Unless the procedure specifically indicates otherwise, Gram stain smears are first ________ ________. air dried
A smear when properly made should look (like milk/very dense/faintly cloudy). faintly cloudy
The most critical step in making the Gram stain is the application of the ________. decolorizer
A culture that is too old may appear Gram-________ when stained. variable
Created by: NeuroHeart