Microscopy

What stain would you use to determine if a bacterial cell is motile?

Which of these species is (are) considered acid-fast?

a. Mycobacterium

b. Bacillus

c. Clostridium

d. Nocardia

Some cells sometimes have a clear, egg-shaped spot inside when viewing a Gram stain. What follow-up stain would be most appropriate to identify this structure?

After a proper Gram stain, bacterial cells appear both purple and red. What could have caused this reaction?

Which of the following produces a high-magnification, three-dimensional image of an object which has been treated with gold.

Following a Gram stain, bacterial cells appear purple. This indicates that the cells are

The ability to make an object appear larger than it is

These microscopes separate light into different wavelengths to produce contrast and three-dimensional images.

This is the measurement of how much light is bent as it passes through a medium

The wavelengths from 400 – 700 nm are considered