What does the Decolorizing Solution, Ethanol, do to Gram-positive bacteria? Turns it pink/red Turns it purple/violet...
What does the Decolorizing Solution, Ethanol, do to Gram-positive bacteria?
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Turns it pink/red |
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Turns it purple/violet |
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Decolorization |
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Nothing, because of the thick cell walls |
Homework Answers
Decolorization.Ethanol interacts with lipid membrane of both gram positive and gram negative bacteria.Ethanol dehydrates the peptidoglycon layer afterthat which layer is shrinking and tightening.
Large crystal violet does not able to penetrate the tightened peptidoglycon layer.and is thus trapped in the cell in gram positive bacteria.
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What does the Decolorizing Solution, Ethanol, do to
Gram-positive bacteria?
Turns it pink/red
Turns it purple/violet...
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1. Please describe the gram staining procedure. Be sure to include: crystal violet, iodine, alcohol, safranin,...
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Steps of Gram Staining Bacteria containing thick cell wall Violet color Bacteria containing thin cell wall (LPS) Violet color Crystal violet treatment lodine Purple color Purple color Decolorization Purple color colorless Safranin Purple color pink 3. A fellow student showed you a gram stained slide where cells containing thick cell walls were stained pink. What would you tell her about the staining procedure? Why? 4. A fellow student showed you a gram stained slide where cells containing LPS were stained...
NEED HELP WITH ALL PLEASE. MICROBIOLOGY
You have stained a bacteria using the Gram staining technique what color would any endospores be if present? A. Colorless B. Green C. Pink D. Blue E. Purple 2. If you omitted the Safranin step in a gram staining procedure, what would be the color of a Gram-negative bacteria? A. Colorless B. Pink C. Green D. Purple E. Blue 3. Bacillus licheniformis would be what color and shape after a Gram staining? A. Purple...
QUESTION 15 Why is crystal violet used in the Gram stain retained in the cell wall of Gram positive bacteria, but not in Gram negative bacteria? Gram positive bacteria have a thick peptidoglycan layer while Gram negative bacteria have a thin peptidoglycan layer. Gram positive bacteria form spores and Gram negative do not. O Gram positive bacteria have no peptidoglycan layer and Gram negative bacteria have a thick cell wall O Gram positive bacteria have capsules and Gram negative bacteria...
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