When making a smear, a coverslip is always used to prevent loss of the stain

Which of these organisms is Gram negative?

The highest biosafety level in the Mt SAC Microbiology labs is

What must be done before a bacterial smear can be stained?

The primary stain in a Gram stain is

A Gram stain is performed in a clinical lab and the result are reported as Gram variable. What is the most likely reason?

Simple stains are used to identify Mycobacterium tuberculosis in sputum samples. 

A Gram positive cell is decolorized when you rinse in alcohol, but a Gram negative cell is not.

A molecule in the dye that contains the color and stains the inside of a bacterial cell is called a

Wash hands thoroughly before disinfecting the benchtop