Gram Stain AM

1. What is the primary stain in the Gram Stain procedure?

A. Methylene Blue

B. Crystal Violet

C. Safranin

D. Alcohol

2. At the end of the Gram stain procedure, what color will a Gram Positive cell stain?

A. Purple

B. Pink

C. No Color

D. Pink and Purple

3. What structure of a bacterial cell are we staining in the Gram Stain?

A. Cell Membrane

B. Capsule

C. Cell Wall

D. Periplasmic space

4. Gram negative cells have a(n)

A. thick peptidoglycan layer

B. thin peptidoglycan layer

C. thick capsule layer

D. thin capsule layer

5. After the addition of Crystal Violet, what color will a gram negative cell stain?

A. purple

B. no color

C. pink

D. blue

6. The picture below represents

A. Gram negative cells

B. Gram positive cells

C. Gram variable cells

D. Not bacterial cells