In the decolorizing step of the Gram stain, which reagent is used?

a. Alcohol-acetone
b. Malachite green
c. Iodine
d. Crystal violet


Answer: a. Alcohol-acetone

Biology & Microbiology

You might also like to view...

All of the following statements are true about organisms that photosynthesize EXCEPT:

a. They are called producers. b. They are able to convert the sun’s energy into a different form of energy. c. They release oxygen. d. They are all eukaryotes

Biology & Microbiology

Moths that can evade a bat's echolocation have ________ that increase their likelihood of survival and reproduction.

A. mutations B. adaptations C. fitness D. selection E. genes

Biology & Microbiology

Which of the following is an autoimmune disease?

A) type 1 diabetes B) anaphylactic shock C) AIDS D) allergies

Biology & Microbiology

Which cells play the greatest role in allergic symptoms?

a. T cells b. monocytes c. plasma cells d. mast cells e. eosinophils

Biology & Microbiology