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MCQs

Total Questions : 27 | Page 3 of 3 pages
Question 21. . A dense bacterial population caught in a tangled web of fibers sticking to a surface describes
  1.    coagulation
  2.    a biodisc
  3.    a biofilm
  4.    the membrane filter technique
 Discuss Question
Answer: Option C. -> a biofilm
Question 22. . Which of the following is responsible for the corrosion problem?
  1.    Iron bacteria
  2.    Sulfur bacteria
  3.    Slime forming bacteria
  4.    All of these
 Discuss Question
Answer: Option B. -> Sulfur bacteria
Question 23. . Water testing relies on the detection of certain indicator organisms known as
  1.    acid-fast bacteria
  2.    bacteroids
  3.    coliforms
  4.    dinoflagellates
 Discuss Question
Answer: Option C. -> coliforms
Question 24. . The death of a river by environmental pollutants ultimately results from
  1.    the overpopulation of algae
  2.    the overabundance of toxic proteins
  3.    the depletion of oxygen
  4.    the buildup of sediment on the river bottom
 Discuss Question
Answer: Option C. -> the depletion of oxygen
Question 25. . Which of the following is responsible for the corrosion problem?
  1.    Iron bacteria
  2.    Sulfur bacteria
  3.    Slime forming bacteria
  4.    All of these
 Discuss Question
Answer: Option B. -> Sulfur bacteria
Question 26. . Water testing relies on the detection of certain indicator organisms known as
  1.    acid-fast bacteria
  2.    bacteroids
  3.    coliforms
  4.    dinoflagellates
 Discuss Question
Answer: Option C. -> coliforms
Question 27. . The death of a river by environmental pollutants ultimately results from
  1.    the overpopulation of algae
  2.    the overabundance of toxic proteins
  3.    the depletion of oxygen
  4.    the buildup of sediment on the river bottom
 Discuss Question
Answer: Option C. -> the depletion of oxygen

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