Escherichia coli (E. coli) is a bacterium that is commonly found in the intestines of humans and other animals. It is often used as an indicator organism to assess the level of fecal contamination in water, as its presence suggests that other pathogenic organisms might also be present.

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Escherichia Coli

Question 11

Multiple Choice

Escherichia coli:

A) is a deadly virus found in sewage.
B) is an infectious protozoan.
C) is a good indicator of the amount of sewage present in water.
D) cannot be transmitted through water.
E) was responsible for a large outbreak of diarrhea in Milwaukee in 1993.

Correct Answer: