Robert Koch helped establish the germ theory of disease by discovering that anthrax was caused by a disease. After he isolated and purified the same bacteria from several diseased animals, what would be the next step in order to show that this bacteria

caused anthrax?

A) culture the bacteria on Petri dishes
B) perform physiological testing
C) visualize the bacteria with an electron microscope
D) find out if antibiotics treat the diseased animals
E) introduce the bacteria into a new mouse to see if it established the same infection


Answer: E

Biology & Microbiology

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