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Microbiology

Q1
Bonus (+1 each) Select all of the responses that indicate the importance of the Gram stain. Gram stain results can help class
Q2
Bonus (+1) What role does crystal violet play in the Gram stain procedure? primary stain secondary stain decolorizer mordant
Q3
Bonus (+2) If a microbiology lab student left the safranin out of the Gram stain procedure, what would be the result? Assume
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Answer #1

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Question 1 : The correct option are "Gram stain results can help classify bacteria and Gram stain results can assist in diagnosing bacterial infections".

Explanation : Gram staining is used for identification of gram positive and gram negative strain of bacteria.

Question 2 : The correct option is "primary stain".

Explanation : Crystal violet is a gram stain which is used as primary stain.

Question 3 : The correct option is " Gram-positive cells would be purple and Gram-negative cells would be colorless".

Explanation : Crystal violet provide purple colour to bacteria whereas Safranin provide pink colour to bacteria.

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