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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It has been said that bacteria are essential for the existence of life on Earth. Which of the following is the essential function performed by bacteria?

a. control insect populations

b. directly provide food for humans

c. decompose organic material and recycle elements

d. cause disease

e. produce human hormones such as insulin

A Salmonella species is grown for 8 hours. In this time, each cell divides about four times. What is the generation time?

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?

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

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

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 __________