Microbiology: An Introduction (13th Edition)
Microbiology: An Introduction (13th Edition)
13th Edition
ISBN: 9780134605180
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case, Derek Weber, Warner Bair
Publisher: PEARSON
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Chapter 1, Problem 10MCQ

Which of the following statements about E. coli is false?

  1. a. E. coli was the first disease-causing bacterium identified by Koch.
  2. b. E. coli is part of the normal microbiota of humans.
  3. c. E. coli is beneficial in human intestines.
  4. d. A disease-causing strain of E. coli causes bloody diarrhea.
  5. e. none of the above
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During this outbreak, some people sickened with listeriosis testedpositive for Listeria monocytogenes in their bloodstream, but a DNAprofile of the bacterium showed that it was not the outbreak strain.What likely conclusion can be drawn from this information?a. It is a false positive. b. The person is not part of the outbreak.c. Listeria monocytogenes mutates frequently, making DNAprofiling unreliable.d. The person has already begun to recover from the disease.
Which of the following compounds represents a peptidoglycan specific antibiotic ? A. tetracycline B. chloramphenicol C. penicillin D. aspirin
The following are the limitations of Koch's postulates EXCEPT: A. some pathogens cannot grow on artificial media and therefore cannot be identified as the causative agent of the disease B. some diseases involve multiple pathogens which produce similar symptoms making it difficult to pinpoint the causative agent C. some diseases are host-specific and re-inoculation may pose ethical concerns D. some microorganisms are present in the body fluids of the infected animal which make them difficult to be cultured
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cell culture and growth media for Microbiology; Author: Scientist Cindy;https://www.youtube.com/watch?v=EjnQ3peWRek;License: Standard YouTube License, CC-BY