Question 1

The member of the Enterobacteriaceae that has enteroinvasive, enterotoxigenic, enteropathogenic, and enterohemorrhagic strains is _____.

Accepted Answer

The answer of The member of the Enterobacteriaceae that has...

Question 2

Nationwide, over 100,000 patients a year die from septic shock. This is due to

Accepted Answer

A)   the presence of lipopolysaccharide in the outer membrane of bacteria.
B)   lipoteichoic acid in the cell wall of bacteria.
C)   a cytotoxin similar to the diphtheria toxin.
D)   coagulase.
E)   a neurotoxin similar to botulin.F) A) and E)
G) A) and C)

Question 3

Which of the following is an agent of the sexually-transmitted disease chancroid?

Accepted Answer

A)   Haemophilus aegyptius
B)   Haemophilus influenzae
C)   Haemophilus parainfluenzae
D)   Haemophilus ducreyi
E)   Haemophilus aphrophilusF) D) and E)
G) A) and B)

Question 4

Which is incorrect about Yersinia pestis?

Accepted Answer

A)   It exhibits bipolar staining.
B)   It is a gram-negative rod.
C)   It produces coagulase enzyme.
D)   It has a capsule.
E)   It produces enterotoxin.F) C) and D)
G) All of the above

Question 5

Shigella species have the following characteristics, except

Accepted Answer

A)   they are non-motile.
B)   they release endotoxin.
C)   they belong to Enterobacteriaceae.
D)   they infect the small intestine.
E)   they produce enterotoxin.F) A) and C)
G) C) and E)

Question 6

The two true pathogenic enteric genera of the Enterobacteriaceae are _____ and _____.

Accepted Answer

Shigella; ...

Question 7

Patients with legionellosis should be placed in isolation when hospitalized due to the contagious nature of the pathogen.

Accepted Answer

A) True 
 B)False

Question 8

Which is incorrect about shigellosis?

Accepted Answer

A)   Outbreaks have occurred in day-care centers.
B)   It is characterized by watery diarrhea with bloody, mucoid stools, and abdominal cramps.
C)   It frequently involves septicemia.
D)   Human carriers cause fecal transmission.
E)   It is also called bacillary dysentery.F) A) and B)
G) All of the above

Question 9

Which of the following species was once considered so benign that microbiologists used it to trace movements of air currents in hospitals and over cities?

Accepted Answer

A)   Morganella
B)   Providencia
C)   Citrobacter
D)   Serratia
E)   LegionellaF) A) and D)
G) All of the above

Question 10

Which of the following is not correct concerning the plague?

Accepted Answer

A)   Mice, voles, and other rodents are primary long-term reservoirs.
B)   It is transmitted by flea vectors.
C)   Less than 10 cases per year occur in the U.S.
D)   The etiological agent is Yersinia pestis.
E)   Strains of the plague bacillus are less virulent today compared to strains prevalent in the Middle Ages.F) B) and C)
G) A) and B)

Question 11

Chancroid is characterized by

Accepted Answer

A)   sexually transmission.
B)   geographical distribution in the tropics and subtropics.
C)   lesions which develop at the portal of entry.
D)   bubo-like swelling of the lymph nodes.
E)   All of these choices are correct.F) B) and E)
G) D) and E)

Question 12

A paroxysmal cough is associated with Legionnaires'disease.

Accepted Answer

A) True 
 B)False

Question 13

Which are considered true enteric pathogens?

Accepted Answer

A)   Salmonella
B)   Klebsiella
C)   Proteus
D)   Enterobacter
E)   ShigellaF) B) and E)
G) A) and D)

Question 14

Genes for which of the following may be transferred between fecal bacteria?

Accepted Answer

A)   toxin production
B)   capsules
C)   fimbriae
D)   hemolysins
E)   All of these choices are correct.F) B) and E)
G) B) and C)

Question 15

All of the following are coliforms that cause opportunistic and nosocomial infections, except

Accepted Answer

A)   Enterobacter.
B)   Citrobacter.
C)   Shigella.
D)   Klebsiella.
E)   Serratia.F) D) and E)
G) None of the above

Exam 20: The Gram-Negative Bacilli of Medical Importance

Nationwide, over 100,000 patients a year die from septic shock. This is due to

Correct Answer
verified

Chancroid is characterized by

Correct Answer
verified

All of the following are coliforms that cause opportunistic and nosocomial infections, except

Correct Answer
verified

A paroxysmal cough is associated with Legionnaires'disease.

Correct Answer
verified

Shigella species have the following characteristics, except

Correct Answer
verified

Genes for which of the following may be transferred between fecal bacteria?

Correct Answer
verified

Which of the following is not correct concerning the plague?

Correct Answer
verified

The member of the Enterobacteriaceae that has enteroinvasive, enterotoxigenic, enteropathogenic, and enterohemorrhagic strains is _____.

Correct Answer
verified

Which is incorrect about shigellosis?

Correct Answer
verified

Which is incorrect about Yersinia pestis?

Correct Answer
verified

Which of the following is an agent of the sexually-transmitted disease chancroid?

Correct Answer
verified

Patients with legionellosis should be placed in isolation when hospitalized due to the contagious nature of the pathogen.

Correct Answer
verified

Which of the following species was once considered so benign that microbiologists used it to trace movements of air currents in hospitals and over cities?

Correct Answer
verified

The two true pathogenic enteric genera of the Enterobacteriaceae are _ and _.

Correct Answer
verified
Shigella; ...
View Answer

Which are considered true enteric pathogens?

Correct Answer
verified

Exam 20: The Gram-Negative Bacilli of Medical Importance

Nationwide, over 100,000 patients a year die from septic shock. This is due to

Correct AnswerverifiedShow Answer

Chancroid is characterized by

Correct AnswerverifiedShow Answer

All of the following are coliforms that cause opportunistic and nosocomial infections, except

Correct AnswerverifiedShow Answer

A paroxysmal cough is associated with Legionnaires'disease.

Correct AnswerverifiedShow Answer

Shigella species have the following characteristics, except

Correct AnswerverifiedShow Answer

Genes for which of the following may be transferred between fecal bacteria?

Correct AnswerverifiedShow Answer

Which of the following is not correct concerning the plague?

Correct AnswerverifiedShow Answer

The member of the Enterobacteriaceae that has enteroinvasive, enterotoxigenic, enteropathogenic, and enterohemorrhagic strains is _____.

Correct AnswerverifiedShow Answer

Which is incorrect about shigellosis?

Correct AnswerverifiedShow Answer

Which is incorrect about Yersinia pestis?

Correct AnswerverifiedShow Answer

Which of the following is an agent of the sexually-transmitted disease chancroid?

Correct AnswerverifiedShow Answer

Patients with legionellosis should be placed in isolation when hospitalized due to the contagious nature of the pathogen.

Correct AnswerverifiedShow Answer

Which of the following species was once considered so benign that microbiologists used it to trace movements of air currents in hospitals and over cities?

Correct AnswerverifiedShow Answer

The two true pathogenic enteric genera of the Enterobacteriaceae are _____ and _____.

Correct AnswerverifiedShigella; ...View AnswerShow Answer

Which are considered true enteric pathogens?

Correct AnswerverifiedShow Answer

Correct Answer
verified

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verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The two true pathogenic enteric genera of the Enterobacteriaceae are _ and _.

Correct Answer
verified
Shigella; ...
View Answer

Correct Answer
verified