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MCQs

Total Questions : 189 | Page 9 of 19 pages
Question 81. Sereny test is used for the detection of
  1.    enteropathogenic Escherichia coli
  2.    enterotoxigenic E. coli
  3.    enteroinvasive E. coli
  4.    verotoxigenic E. coli
 Discuss Question
Answer: Option C. -> enteroinvasive E. coli
Answer: (c).enteroinvasive E. coli
Question 82. Prodigiosin (red pigment) is produced by members of genus
  1.    Hafnia
  2.    Enterobacter
  3.    Serratia
  4.    Cirobacter
 Discuss Question
Answer: Option C. -> Serratia
Answer: (c).Serratia
Question 83. Sylvatic plague occurs in
  1.    mice
  2.    squirrels
  3.    chipmunks
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Answer: (d).all of these
Question 84. Which of the following serotypes of Salmonella can cause gastroenteritis?
  1.    S enteritidis
  2.    S newport
  3.    S typhimurium
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Answer: (d).All of these
Question 85. Verotoxin 1 of Escherichia coli is similar to
  1.    cholera toxin
  2.    shiga toxin
  3.    heat-stable enterotoxin of E. coli
  4.    heat-labile enterotoxin of E. coli
 Discuss Question
Answer: Option B. -> shiga toxin
Answer: (b).shiga toxin
Question 86. Which of the following determine the pathogenicity of Yersinia pestis?
  1.    V and W antigens
  2.    F1 envelope antigen
  3.    Production of pigmented colonies on haemin containing media
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Answer: (d).All of these
Question 87. In Yersinia pestis, capsule is best demonstrated in cultures grown at
  1.    25°C
  2.    29°C
  3.    37°C
  4.    45°C
 Discuss Question
Answer: Option C. -> 37°C
Answer: (c).37°C
Question 88. Which of the following can readily kill Salmonellae?
  1.    Moist heat at 55°C for 20 min
  2.    Moist heat at 55°C for 10 min
  3.    Moist heat at 55°C for 30 min
  4.    Moist heat at 55°C for 1 hr
 Discuss Question
Answer: Option D. -> Moist heat at 55°C for 1 hr
Answer: (d).Moist heat at 55°C for 1 hr
Question 89. Traveller's diarrhea is caused by
  1.    enteropathogenic Escherichia coli (EPEC)
  2.    entero invasive E. coli (EIEC)
  3.    entero toxigenic E. coli (ETEC)
  4.    entero haemorrhagic E. coli (EHEC)
 Discuss Question
Answer: Option C. -> entero toxigenic E. coli (ETEC)
Answer: (c).entero toxigenic E. coli (ETEC)
Question 90. Enterobacter can be differentiated from Klebsiella by
  1.    ornithine positivity
  2.    motility
  3.    both (a) and (b)
  4.    none of these
 Discuss Question
Answer: Option C. -> both (a) and (b)
Answer: (c).both (a) and (b)

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