Question 1

The normal flora of the adult large bowel consists predominantly of:

Accepted Answer

A)   anaerobic species.
B)   Staphylococcus.
C)   Enterococcus.
D)   Enterobacteriaceae.E) All of the above
F) A) and C) A

Question 2

The transport medium that best preserves the viability of most intestinal bacterial pathogens is:

Accepted Answer

A)   buffered glycerol.
B)   rectal culture swab.
C)   Cary-Blair.
D)   Campylobacter thioglycollate broth.E) All of the above
F) A) and D)

Question 3

Sheep blood agar serves which purpose when used in the bacterial fecal culture?

Accepted Answer

A)   Evaluation of general flora and predominant species
B)   Selection of enteric pathogens such as Salmonella, Aeromonas, and others
C)   Inhibition of normal flora and selection of enteric pathogens
D)   Enrichment for enteric pathogens such as Salmonella and othersE) A) and B)
F) None of the above

Question 4

Campylobacter thioglycollate broth serves which purpose when used in the bacterial fecal culture?

Accepted Answer

A)   Evaluation of general flora and predominant species
B)   Selection of enteric pathogens such as Salmonella, Aeromonas, and others
C)   Inhibition of normal flora and selection of enteric pathogens
D)   Enrichment for enteric pathogens such as Salmonella and othersE) A) and B)
F) A) and C)

Question 5

XLD agar serves which purpose when used in the bacterial fecal culture?

Accepted Answer

A)   Evaluation of general flora and predominant species
B)   Selection of enteric pathogens such as Salmonella, Aeromonas, and others
C)   Inhibition of normal flora and selection of enteric pathogens
D)   Enrichment for enteric pathogens such as Salmonella and othersE) B) and D)
F) C) and D) C

Question 6

Selenite broth serves which purpose when used in the bacterial fecal culture?

Accepted Answer

A)   Evaluation of general flora and predominant species
B)   Selection of enteric pathogens such as Salmonella, Aeromonas, and others
C)   Inhibition of normal flora and selection of enteric pathogens
D)   Enrichment for enteric pathogens such as Salmonella and othersE) All of the above
F) A) and C)

Question 7

Cultures for isolation of Campylobacter jejuni and Campylobacter coli should be incubated in:

Accepted Answer

A)   a capnophilic atmosphere at 42° C and examined at 24 and 48 hours.
B)   a microaerophilic atmosphere at 35° C and examined at 24 and 48 hours.
C)   regular room air at 35° C and examined at 48 and 72 hours.
D)   a microaerophilic atmosphere at 42° C and examined at 24 and 48 hours.E) B) and D)
F) C) and D) D

Question 8

Stool received for routine culture in most clinical laboratories in the United States should be examined for the presence of at least:

Accepted Answer

A)   Campylobacter, Salmonella, and Shigella spp.
B)   Salmonella and Shigella spp.
C)   Campylobacter and Vibrio spp.
D)   Salmonella, Shigella, and Vibrio spp.E) C) and D)
F) None of the above

Question 9

MacConkey agar serves which purpose when used in the bacterial fecal culture?

Accepted Answer

A)   Evaluation of general flora and predominant species
B)   Selection of enteric pathogens such as Salmonella, Aeromonas, and others
C)   Inhibition of normal flora and selection of enteric pathogens
D)   Enrichment for enteric pathogens such as Salmonella and othersE) A) and C)
F) B) and C)

Question 10

Gram-negative broth serves which purpose when used in the bacterial fecal culture?

Accepted Answer

A)   Evaluation of general flora and predominant species
B)   Selection of enteric pathogens such as Salmonella, Aeromonas, and others
C)   Inhibition of normal flora and selection of enteric pathogens
D)   Enrichment for enteric pathogens such as Salmonella and othersE) A) and B)
F) A) and C)

Exam 74: Gastrointestinal Tract Infections

The normal flora of the adult large bowel consists predominantly of:

Correct Answer
verified
A

The transport medium that best preserves the viability of most intestinal bacterial pathogens is:

Correct Answer
verified

Sheep blood agar serves which purpose when used in the bacterial fecal culture?

Correct Answer
verified

Campylobacter thioglycollate broth serves which purpose when used in the bacterial fecal culture?

Correct Answer
verified

XLD agar serves which purpose when used in the bacterial fecal culture?

Correct Answer
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C

Selenite broth serves which purpose when used in the bacterial fecal culture?

Correct Answer
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Cultures for isolation of Campylobacter jejuni and Campylobacter coli should be incubated in:

Correct Answer
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D

Stool received for routine culture in most clinical laboratories in the United States should be examined for the presence of at least:

Correct Answer
verified

MacConkey agar serves which purpose when used in the bacterial fecal culture?

Correct Answer
verified

Gram-negative broth serves which purpose when used in the bacterial fecal culture?

Correct Answer
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Exam 74: Gastrointestinal Tract Infections

The normal flora of the adult large bowel consists predominantly of:

Correct AnswerverifiedA

The transport medium that best preserves the viability of most intestinal bacterial pathogens is:

Correct AnswerverifiedShow Answer

Sheep blood agar serves which purpose when used in the bacterial fecal culture?

Correct AnswerverifiedShow Answer

Campylobacter thioglycollate broth serves which purpose when used in the bacterial fecal culture?

Correct AnswerverifiedShow Answer

XLD agar serves which purpose when used in the bacterial fecal culture?

Correct AnswerverifiedC

Selenite broth serves which purpose when used in the bacterial fecal culture?

Correct AnswerverifiedShow Answer

Cultures for isolation of Campylobacter jejuni and Campylobacter coli should be incubated in:

Correct AnswerverifiedD

Stool received for routine culture in most clinical laboratories in the United States should be examined for the presence of at least:

Correct AnswerverifiedShow Answer

MacConkey agar serves which purpose when used in the bacterial fecal culture?

Correct AnswerverifiedShow Answer

Gram-negative broth serves which purpose when used in the bacterial fecal culture?

Correct AnswerverifiedShow Answer

Correct Answer
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A

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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C

Correct Answer
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D

Correct Answer
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Correct Answer
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Correct Answer
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