Micro 020 - General Microbiology » Winter 2021 » Lab Quiz 2 Gram Stain

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Question #1
What color is a Gram +?
A.   Pink
B.   Red
C.   Purple
D.   Blue
Question #2
What color is a Gram -?
A.   Green
B.   Red
C.   Purple
D.   Blue
Question #3
What dyes are used in a Gram stain?
A.   Acetone/alcohol
B.   Crystal Violet, Safranin
C.   Crystal violet, methylene blue
Question #4
What is the decolorizer/ destain for the Gram stain?
A.   acid/alcohol
B.   acetone/alcohol
C.   acetone/phenol
D.   acid/ acetone
Question #5
Which ingredient sets the stain?
A.   Safranin
B.   Iodine
C.   Crystal violet
D.   Acetone/alcohol

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