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MCQs

Total Questions : 304 | Page 30 of 31 pages
Question 291. . Coxsackie virus B3, a subgroup of enteroviruses, commonly causes
  1.    acute hemorrhagic conjunctivitis
  2.    B. muscular dystrophy
  3.    myocarditis
  4.    gastroenteritis
 Discuss Question
Answer: Option C. -> myocarditis
Question 292. . All infections do not cause fever and all fevers are not due to infections which of the following is an example of non-infections cause of fever?
  1.    Typhoid
  2.    Chicken pox
  3.    Rheumatic disease
  4.    Malaria
 Discuss Question
Answer: Option C. -> Rheumatic disease
Question 293. . What is common in catheters and ventilators?
  1.    hey bypass important defenses of the body
  2.    Bacteria responsible for associated infections are usually susceptible to antibiotics
  3.    They predispose patients to viral rather than bacterial infections
  4.    They are used primarily in neonatal intensive care units
 Discuss Question
Answer: Option A. -> hey bypass important defenses of the body
Question 294. .  An important host defense of human beings is a dense resident microbiota associated with
  1.    lungs
  2.    bladder
  3.    uterus
  4.    vagina
 Discuss Question
Answer: Option D. -> vagina
Question 295. . The influenza vaccine is administered each year because
  1.    mutations in the viral hemagglutinin may allow the virus to evade the immune response elicited by previous vaccines
  2.    it is a polysaccharide vaccine that does not confer long-term protection
  3.    he vaccine is sufficiently toxic to make it necessary to administer only a small amount at any one time
  4.    none of the above
 Discuss Question
Answer: Option A. -> mutations in the viral hemagglutinin may allow the virus to evade the immune response elicited by previous vaccines
Question 296. . Lactoferrin helps to protect against pathogens by
  1.    sequestering Iron
  2.    blocking sebum production
  3.    lowering the pH
  4.    facilitating the growth of normal flora
 Discuss Question
Answer: Option A. -> sequestering Iron
Question 297. . Which of the following is common in the disease caused by Coryne-bacterium diphtheriae and Bacillus anthracis?
  1.    Both organisms are gram-positive spore formers
  2.    Diphtheria toxin and edema toxin are ADP ribosylating toxins
  3.    The most serious disease symptoms are the direct result of toxin action
  4.    Both organisms cause skin and respiratory tract infections
 Discuss Question
Answer: Option C. -> The most serious disease symptoms are the direct result of toxin action
Question 298. . Which of the following disease is caused by DNA viruses?
  1.    Poliomyelitis
  2.    Yellow fever
  3.    Measles
  4.    Small pox
 Discuss Question
Answer: Option D. -> Small pox
Question 299. . Fatalities following influenza infection are usually due to the
  1.    dehydration
  2.    bacterial superinfection
  3.    damage to the heart muscle
  4.    formation of granulomas in the lung
 Discuss Question
Answer: Option B. -> bacterial superinfection
Question 300. . Which of the following disease is not caused by microbial protein toxin?
  1.    Botulism
  2.    Diphtheria
  3.    Shigella dysentery
  4.    Tuberculosis
 Discuss Question
Answer: Option D. -> Tuberculosis

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