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MCQs

Total Questions : 304 | Page 28 of 31 pages
Question 271. Bacillary dysentery is caused by which of the following microorganism?
  1.    Clostridium perfringens
  2.    Borrelia sp.
  3.    Shigella
  4.    Pseudomonas aeruginosa
 Discuss Question
Answer: Option C. -> Shigella
Answer: (c).Shigella
Question 272. Wounds and burns represent one active mechanism.
  1.    True
  2.    False
  3.    May be
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 273.  Which of the following characteristic of the Rotavirus was important for the construction of the Rotashield vaccine?
  1.    The possession of a segmented RNA genome
  2.    A limited number of capsule types
  3.    The ability of monkey Rotavirus strains to cause serious illness (diarrhea) in human beings
  4.    The ability of the Rotavirus to be transmitted faster
 Discuss Question
Answer: Option A. -> The possession of a segmented RNA genome
Question 274.  Plastic implants can pose a serious nosocomial infection problem because
  1.    phagocytes have trouble moving on the plastic surface
  2.    phagocytes have trouble engulfing bacteria embedded in a biofilm
  3.    infected implants usually have to be surgically removed
  4.    all of the above
 Discuss Question
Answer: Option D. -> all of the above
Question 275.  Pseudomembraneous colitis is
  1.    precipitated by the use of certain antibiotics
  2.    caused by a gram-positive bacterium
  3.    caused by a spore-forming bacterium
  4.    all of the above
 Discuss Question
Answer: Option D. -> all of the above
Question 276.  Which of the following is true regarding anthrax?
  1.    Anthrax is caused by a virus
  2.    Anthrax is highly contagious
  3.    Inhalation anthrax and cutaneous anthrax are caused by separate strains of Bacillus anthracis
  4.    Inhalation Anthrax requires infection with a large number of spores
 Discuss Question
Answer: Option D. -> Inhalation Anthrax requires infection with a large number of spores
Question 277.  A major difference between EHEC and EPEC is
  1.    EHEC secretes a Shiga-like toxin and EPEC does not
  2.    EHEC possesses a type III secretion system and EPEC does not
  3.    EPEC rearranges host cell actin and EHEC does not
  4.    EPEC passes through the placenta to infect the fetus and EHEC does not
 Discuss Question
Answer: Option A. -> EHEC secretes a Shiga-like toxin and EPEC does not
Question 278.  The toxins produced by bacteria
  1.    kill viruses
  2.    encourage bacterial reproduction
  3.    interfere with physiological processes in the body
  4.    all of the above
 Discuss Question
Answer: Option C. -> interfere with physiological processes in the body
Question 279.  The nature of the poliovirus gives for oral vaccination (satin vaccine) as part of the eradication programme is
  1.    heat killed virus
  2.    live attenuated strains of all three immunological types
  3.    small dosage of wild-type live viruses
  4.    formalin-inactivated viruses
 Discuss Question
Answer: Option B. -> live attenuated strains of all three immunological types
Question 280.  Both Mycobacterium tuberculosis and Streptococcus pneumoniae
  1.    are acquired by inhalation
  2.    have cell walls that contain a high content of mycolic acids
  3.    have polysaccharide capsules
  4.    stay in the lung and rarely, if ever, enter the bloodstream
 Discuss Question
Answer: Option A. -> are acquired by inhalation

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