East Los Angeles College » Microbiology » Microbiology 020 - General Microbiology » Fall 2021

Question #1

Put the following in the correct order: I. Iodine II. Alcohol III.Safranin IV. Crystal violet

A. III, I, II, IV

B. I, II, III, IV

C. None of the correct answers are listed here.

D. IV, II, I, III

E. IV, I, II, III

Question #2

If you forget to add the de-stain during a gram stain, then all the cells will appear ________.

A. Pink

B. Blue

C. Colorless

D. Green

E. Purple

Question #3

Which of the following reagents is NOT used for a gram stain?

A. Alcohol

B. Acid-alcohol

C. Safranin

D. Crystal violet

E. Iodine