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MCQs

Total Questions : 189 | Page 8 of 19 pages
Question 71. An enrichment medium for the isolation of Shigella is
  1.    Alkaline peptone water
  2.    Terathionate broth
  3.    Selenite F broth
  4.    none of these
 Discuss Question
Answer: Option C. -> Selenite F broth
Answer: (c).Selenite F broth
Question 72. The bacteria that is negative for fermentation of mannitol is
  1.    S flexneri
  2.    S boydii
  3.    S dysenteriae
  4.    S sonnei
 Discuss Question
Answer: Option C. -> S dysenteriae
Answer: (c).S dysenteriae
Question 73. Heat-labile enterotoxin of Escherichia coli activates
  1.    guanylate cyclase
  2.    adenylate cyclase
  3.    both (a) and (b)
  4.    none of these
 Discuss Question
Answer: Option B. -> adenylate cyclase
Answer: (b).adenylate cyclase
Question 74. Heat-stable enterotoxin of Escherichia coli activates
  1.    adenylate cyclase
  2.    guanylate cyclase
  3.    both of the above
  4.    none of these
 Discuss Question
Answer: Option B. -> guanylate cyclase
Answer: (b).guanylate cyclase
Question 75. In Widal test the significant titres for H agglutinins is
  1.    1:50 or more
  2.    1:100 ormore
  3.    1:200 or more
  4.    1:400 or more
 Discuss Question
Answer: Option C. -> 1:200 or more
Answer: (c).1:200 or more
Question 76. Transmission of pneumonic plague from man to man is through
  1.    inoculation
  2.    ingestion
  3.    droplet infection
  4.    all of these
 Discuss Question
Answer: Option C. -> droplet infection
Answer: (c).droplet infection
Question 77. Which of the following bacteria is/are known as coliform bacilli?
  1.    Escherichia
  2.    Klebsiella
  3.    Enterobacter
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Answer: (d).All of these
Question 78. Salmonellae can also be killed by
  1.    pasteurisation
  2.    chlorination
  3.    boiling
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Answer: (d).all of these
Question 79. The agent(s) which can cause plague is/are
  1.    Yersinia pestis
  2.    Proteus mirabilis
  3.    Pseudomonas aeruginosa
  4.    All of these
 Discuss Question
Answer: Option A. -> Yersinia pestis
Answer: (a).Yersinia pestis
Question 80. Which of the following genus belongs to family Spirochaetaceae?
  1.    Treponema
  2.    Spirochaeta
  3.    Borrelia
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Answer: (d).All of these

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