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1Epidemiological investigations depend on being able to link a number of instances of an infection to ___________.
A)multiple people.
B)multiple locations.
C)a common source.
D)a common state in the US.



2The limited number of bacterial strains that are susceptible to infection by a specific phage are referred to as the ___________ of that bacteriophage.
A)host range
B)phage strain
C)plaques



3Different members of a bacterial species can be categorized based on their susceptibility to lysis by specific bacteriophages.
A)True
B)False



4Clear zones within a bacterial lawn that represent areas in which the bacterial cells have been infected and lysed are called________.
A)phages
B)plaques
C)strains
D)viruses



5Which of the following sentences is an accurate description of bacteriophage?
A)Bacteriophage are bacteria that infect viruses, eventually lysing them.
B)Bacteriophage are viruses that infect bacteria, eventually lysing them.







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