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

Need help with your exam preparation?

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

Need help with your exam preparation?