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This slide depicts a mixed culture of bacteria that were properly stained using the acid-fast stain. Which are more numerous, acid-fast or non-acid-fast cells?

What is thought to cause gram-positive cells to retain the primary stain and the mordant complex whereas gram-negative cells are decolorized?

A(n) ________ is a metabolically active and growing cell.

The Gram stain is an example of a _______Blank staining procedure, which takes advantage of the fact that cells or parts of cells react differently and can be distinguished by the use of two different dyes.

In order to withstand hostile conditions and facilitate survival, some bacteria produce resistant structures known as ______.

Before heat fixation, a wet smear of bacterial cells on a slide must first be

What might be the result of not allowing a slide to air dry sufficiently prior to heat fixation? Select all that apply.

You make a smear of E. coli and then simple stain the slide with methylene blue. If you failed to use correct aseptic technique by not sterilizing the loop before picking up the bacterial sample for the smear, what results may be seen under the microscope?

Which of the following streak plate diagrams shows the correct pattern for a quadrant streak plate method?

Describe in detail something you learned from this lab unit that was not on this exam.