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Systematic Bacteriology › View

Which of the following is NOT a characteristic of the phylum Proteobacteria?

A. the phylum contains 5 classes

B. they are the largest group of bacteria

C. they are all Gram negative

D. Staphylococcus is in this phylum

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Infectious Disease and Pathogens › View

Infectious diseases can spread by contact with

A. an infected person

B. a contaminated object

C. an Infected animal

D. an environmental source

E. All of the above.

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