Microbiology 020 - General Microbiology » Spring 2021 » Lab Quiz 2 Gram Stain

Need help with your exam preparation?

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

Need help with your exam preparation?