Aseptic techniqe is the process of preventing contamination of a culture with environmental microbes and preventing contamination of yourself or the environment with the organism in the culture.

What stain is used as the counterstain when performing a spore stain?

What would the slide look like under the microscope if methylene blue is used instead of nigrosin?

 Students are only required to clean their work area if they spill a broth culture.

Just after the decolorizer (acid-alcohol) is applied, acid-fast bacteria will appear __________ and non-acid-fast bacteria will appear __________.

Which microscope objective is ONLY used for viewing bacteria?

In order for the stain to penetrate the impervious coat of the spore, which primary stain is steamed into the cell surface?

Here is the result of your broth that touched your thumb. Did any bacteria grow? How do you know that?

A thick waxy layer of what substance in the cell wall constitutes the major portion of the mycobacterial cell wall, separating it from other microorganisms?

When viewing a hanging drop, it is important to adjust the condenser using the iris diaphragm. What is the function of this part of the microscope?