The laboratory of Robert Koch contributed which of the following to the field of microbiology?
a. simple staining technique
b. use of Petri dishes
c. first photomicrograph of bacteria
d. all of the above

If a bacterium that normally lives in the gastrointestinal tract is plunged into a salty solution, what would occur?

a. halophilic adjustment

b. osmotic concentration

c. lysis

d. plasmolysis

e. nothing

After performing the streak plate method, what feature(s) would you look for on the agar plate to determine if you have a pure culture?

Match the following people to their scientific/medical contribution:

Note: Choices may be used more than once or not at all.

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A scientist who studies the role of microorganisms in the environment is a(n) __________ .

a. genetic technologist

b. earth microbiologist

c. epidemiologist

d. environmental microbiologist

Fill in the blanks with the name(s) of the scientist(s) whose investigations led to the following fields of study in microbiology.

Environmental microbiology ___________ and _____________            

Fill in the blanks with the name(s) of the scientist(s) whose investigations led to the following fields of study in microbiology.

Biochemistry _________ and __________            

Which scientist first hypothesized that medical personnel can infect patients with pathogens?

a. Florence Nightingale

b. Joseph Lister

c. John Snow

d. Ignaz Semmelweis

Fill in the blanks with the name(s) of the scientist(s) whose investigations led to the following fields of study in microbiology.

Chemotherapy ____________