Exam 3: Tools of the Laboratory: Methods for the Culturing of Microscopic Analysis of Microorganisms

The type of microscopy in which you would observe brightly illuminated specimens against a black background is ______.

Magni?cation is achieved in a compound microscope through the initial magni?cation of the specimen by the _____ lens. This image is then projected to the _____ lens that will further magnify the specimen to form a virtual image received by the eye.

A scanning confocal microscope _______.

A pure culture contains _______.

Basic dyes are _______.

The bending of light rays as they pass from one medium to another is called refraction.

The specimen preparation technique that is best for viewing cell motility is the ________.

Which type of microscope bombards a whole, metal-coated specimen with electrons moving back and forth over it?

What is the term for a culture made from one isolated colony?

Mixed cultures are also referred to as contaminated cultures.

A microbiologist inoculates Staphylococcus epidermidis and Escherichia coli into a culture medium. Following incubation, only the E. coli grows in the culture. What is the most likely explanation?

The correct microbiological term for the sample of specimen that is put into a nutrient medium to produce a culture is ______.

Some microbes are not capable of growing on artificial media as pure cultures.

A medium that is gel-like has less agar in it compared to a solid medium.

A microbiologist makes a fixed smear of bacterial cells and stains it with methylene blue. All cells appear blue under the oil immersion lens. This is an example of ______.