Microbiology Chapt. 23

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jessebuck90
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96411
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Microbiology Chapt. 23
Updated:
2011-08-08 21:55:03
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microbiology microbial diseases digestive system
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Quiz Chapter 23
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  1. Which of the following is NOT an accessory digestive organ?
    A. the liver
    B. the esophagus
    C. the pancreas
    D. the gallbladder
    E. the tongue
    B.
    (this multiple choice question has been scrambled)
  2. Where in the digestive tract does the absorption of water take place?
    A. the large intestine
    B. the stomach
    C. the small intestine
    D. the esophagus
    E. the rectum
    A.
    (this multiple choice question has been scrambled)
  3. All of the following are normal microbiota of the colon EXCEPT:
    A. Bacteroides
    B. Candida
    C. Escherichia
    D. Lactobacillus
    E. Campylobacter
    E.
    (this multiple choice question has been scrambled)
  4. Streptococcus mutans is associated with
    A. food poisoning
    B. dental caries
    C. typhoid fever
    D. severe diarrhea
    E. periodontitis
    B.
    (this multiple choice question has been scrambled)
  5. Porphyromonas gingivalis is associated with
    A. parotitis
    B. periodontitis
    C. food poisoning
    D. gastroenteritis
    E. typhoid fever
    B.
    (this multiple choice question has been scrambled)
  6. Which of the following is now known to be the cause of most peptic ulcers?
    A. Vibrio cholera
    B. E. coli O157:H7
    C. Shigella dysenteriae
    D. Salmonella enterica
    E. Helicobacter pylori
    E.
    (this multiple choice question has been scrambled)
  7. Urease is an important virulence factor of which of the following?
    A. Vibrio cholera
    B. Porphyromonas gingivalis
    C. Shigella dysenteriae
    D. E. coli O157:H7
    E. Helicobacter pylori
    E.
    (this multiple choice question has been scrambled)
  8. The most important virulence factor of Vibrio cholera is
    a. the presence of polar flagella
    b. its ability to survive in
    freshwater
    c. its ability to form biofilms in
    saltwater
    d. its activation of certain genes
    within the human body
    e. its ability to produce a potent
    endotoxin
    e.
  9. The major symptoms of cholera are indirectly attributable to which of the following?
    a. production of urease
    b. activity of a type III secretion
    system
    c. cessation of protein synthesis in
    host cells
    d. death of cells lining the
    intestinal tract
    e. activation of adenylate cyclase
    e.
  10. Which of the following serotypes of Salmonella enterica causes most US cases of human salmonellosis?
    A. enteritidis
    B. A, B, and C
    C. A and C
    D. paratyphi
    E. typhimurium
    C.
    (this multiple choice question has been scrambled)
  11. All of the following are characteristics of coliforms EXCEPT:
    a. they are Gram-negative bacilli
    b. they are found in the intestinal
    tracts of humans and animals
    c. they ferment lactose
    d. they are all facultatively
    anaerobic
    e. they include bacteria such as E. coli
    d.
  12. E. coli O157:H7can be transmitted by which of the following?
    A. fomites
    B. pork
    C. ground beef
    D. dairy products
    E. eggs
    C.
    (this multiple choice question has been scrambled)
  13. The most common cause of traveler’s diarrhea is
    A. Salmonella enterica
    B. Shigella flexneri
    C. Giardia intestinalis
    D. E. coli
    E. Cryptosporidium parvum
    D.
    (this multiple choice question has been scrambled)
  14. Shigellosis can be differentiated from salmonellosis by the fact that Shigella
    A. kills host cells
    B. multiplies in the cell’s cytosol
    C. stimulates intestinal epithelial cells to phagocytize the bacterium
    D. multiplies in phagocytic vesicles
    E. causes severe diarrhea, abdominal cramps, and fever
    B.
    (this multiple choice question has been scrambled)
  15. The most common bacterial cause of diarrhea in the United States is
    A. Escherichia
    B. Salmonella
    C. Staphylococcus
    D. Vibrio
    E. Campylobacter
    E.
    (this multiple choice question has been scrambled)
  16. All of the following statements accurately characterize Salmonella EXCEPT:
    A. it is not part of the normal microbiota in humans
    B. S. enterica is thought to be the only species
    C. it is a motile, Gram-negative bacillus
    D. virulent strains are resistant to stomach acid
    E. there are over 2000 species known
    E.
    (this multiple choice question has been scrambled)
  17. All of the following are true statements concerning staphylococcal food poisoning EXCEPT:
    A. the number of cases is unknown
    B. antibiotics are not an effective means of treatment
    C. contaminated food can be detected by its unusual taste
    D. outbreaks are usually associated with large social functions
    E. enterotoxins involved in the food poisoning are heat stable
    C.
    (this multiple choice question has been scrambled)
  18. All of the following are true statements concerning oral herpes EXCEPT:
    A. the virus establishes a latent infection in the trigeminal nerve ganglion
    B. primary infections are usually asymptomatic
    C. lesions can be triggered by emotional stress or menstruation
    D. lesions become more sever with each recurrence
    E. ninety percent of all cases are caused by HSV-1
    D.
    (this multiple choice question has been scrambled)
  19. Which of the following is the major sign or symptom of mumps?
    A. difficulty in breathing
    B. nausea and vomiting
    C. parotitis
    D. diarrhea
    E. deafness
    C.
    (this multiple choice question has been scrambled)
  20. An outbreak of gastroenteritis on a cruise ship might be caused by all of the following EXCEPT:
    A. rotaviruses
    B. noroviruses
    C. astroviruses
    D. caliciviruses
    E. hepaciviruses
    E.
    (this multiple choice question has been scrambled)
  21. Which of the following hepatitis viruses usually produces subclinical infections?
    A. HDV
    B. HBV
    C. HCV
    D. HEV
    E. HAV
    C.
    (this multiple choice question has been scrambled)
  22. Which of the following hepatitis viruses is spread by fecally contaminated drinking water?
    A. HAV
    B. HCV
    C. HEV
    D. HDV
    E. HBV
    A.
    (this multiple choice question has been scrambled)
  23. All of the following are symptoms associated with hepatitis EXCEPT:
    A. jaundice
    B. weight loss
    C. dark urine
    D. nausea and vomiting
    E. a widespread rash
    E.
    (this multiple choice question has been scrambled)
  24. A vaccine is available against which of the following?
    A. hepatitis C
    B. hepatitis B
    C. A, B, and C
    D. hepatitis A
    E. both A and B
    E.
    (this multiple choice question has been scrambled)
  25. Of the following, who is most likely to develop a chronic infection with hepatitis B virus?
    A. the elderly
    B. females at puberty
    C. children between the ages of 2 and 12
    D. young adults
    E. neonates
    E.
    (this multiple choice question has been scrambled)
  26. Which of the following is a notable symptom of giardiasis?
    A. jaundice
    B. foul-smelling “rotten egg” stools
    C. irritability and sleep disturbance
    D. cold sores
    E. “rice-water” stools
    B.
    (this multiple choice question has been scrambled)
  27. Which of the following causes “beaver fever”?
    A. Taenia
    B. Campylobacter
    C. Entamoeba
    D. Enterobius
    E. Giardia
    E.
    (this multiple choice question has been scrambled)

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