In Order to Prove That a Bacterium Is Pathological According

Multiple Choice

In order to prove that a bacterium is pathological according to Koch's postulates, the ____.

A) bacteria must be present in most cases of the disease
B) bacteria must be isolated from the infected host and grown in mixed culture
C) specific disease must be induced when a pure culture of the bacteria is introduced into a healthy host
D) bacteria must be isolated from a transfer host
E) bacterium must produce spores that can be transmitted from one individual to another