Microbiology: An Introduction
Microbiology: An Introduction
11th Edition
ISBN: 9780321733603
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: Benjamin Cummings
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Chapter 27, Problem 10MCQ

Coliforms are used as indicator organisms of sewage pollution because

  1. a. they are pathogens.
  2. b. they ferment lactose.
  3. c. they are abundant in human intestines.
  4. d. they grow within 48 hours.
  5. e. all of the above
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