Which of the following statements regarding coliform bacteria is correct?
A) Coliforms from the human and bovine GI tracts differ, so identifying the specific microbe will indicate the source of contamination.
B) Petri dishes used to enumerate coliforms are best incubated at 45-48°C.
C) The presence of Klebsiella is a strong indicator of fecal contamination.
D) Coliforms derive from the intestinal tract and therefore indicate fecal contamination.
Correct Answer:
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Q1: Potable water must be _.
A)free of pathogens
B)
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Q5: Sewage treatment processes result in the production
Q6: In the secondary phase of water treatment,
Q6: Indicator bacteria for contaminated water are _.
A)coliforms
B)
Q7: Sewage sludge, the solid that remains after
Q8: The first step in sewage treatment is
Q9: Which of the following statements regarding waterborne
Q10: The final treatment of sewage before release
Q11: Biotechnology includes all of the following except
A)using
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