Question 1

Legionnaires' disease is diagnosed by

Accepted Answer

A)  the clinical symptoms in infected patients. 
B)  the microbe's characteristic growth on common laboratory media. 
C)  the microbe's staining properties under the microscope. 
D)  fluorescent antibody or other serological diagnostic procedures. 
E)  the microbe's sensitivity to all antimicrobial agents. 
A)  the clinical symptoms in infected patients. 
B)  the microbe's characteristic growth on common laboratory media. 
C)  the microbe's staining properties under the microscope. 
D)  fluorescent antibody or other serological diagnostic procedures. 
E)  the microbe's sensitivity to all antimicrobial agents. D

Question 2

Unlike other Gram- negative opportunistic bacilli, Bacteroides are (aerotolerant/facultative/obligate) anaerobes.

Accepted Answer

aerotolerant

Question 3

A lesion called _ is characteristic of infection with Haemophilus ducreyi.

Accepted Answer

A)  a chancroid or soft chancre 
B)  an eschar 
C)  petechiae 
D)  ophthalmia neonatorum 
E)  a bubo 
A)  a chancroid or soft chancre 
B)  an eschar 
C)  petechiae 
D)  ophthalmia neonatorum 
E)  a bubo A

Question 4

Moraxella is a common cause of bacteremia.

Accepted Answer

A) True 
 B)False

Question 5

Because of the existence of (acute/symptomatic/asymptomatic) carriers, the eradication of meningococcal disease is unlikely.

Accepted Answer

The answer of Because of the existence of (acute/symptomatic/asymptomatic) carriers,...

Question 6

Which of the following is the result of inhalation of aerosols of fresh water containing a bacterial parasite of protozoa?

Accepted Answer

A)  Q fever 
B)  pertussis 
C)  meningococcal meningitis 
D)  acute bacterial meningitis 
E)  Legionnaires' disease 
A)  Q fever 
B)  pertussis 
C)  meningococcal meningitis 
D)  acute bacterial meningitis 
E)  Legionnaires' disease

Question 7

Serratia is a coliform that

Accepted Answer

A)  does not grow in hospital supplies such as saline and other salt solutions. 
B)  is nonmotile. 
C)  is totally benign in humans. 
D)  is easy to treat because it is sensitive to most antibiotics. 
E)  produces red pigment when grown at room temperature. 
A)  does not grow in hospital supplies such as saline and other salt solutions. 
B)  is nonmotile. 
C)  is totally benign in humans. 
D)  is easy to treat because it is sensitive to most antibiotics. 
E)  produces red pigment when grown at room temperature.

Question 8

Lipid A causes which of the following symptoms?

Accepted Answer

A)  disseminated intravascular coagulation (DI
C)  
B)  hemorrhaging 
C)  fever 
D)  fever and disseminated intravascular coagulation (DI
C)  
E)  fever and hemorrhaging 
A)  disseminated intravascular coagulation (DI
C)  
B)  hemorrhaging 
C)  fever 
D)  fever and disseminated intravascular coagulation (DI
C)  
E)  fever and hemorrhaging

Question 9

A cystic fibrosis patient develops a severe respiratory infection that resists treatment with standard antibiotics. A specimen from the lungs is greenish in color and contains aerobic motile Gram- negative bacilli. The patient is probably infected with

Accepted Answer

A)  Pseudomonas aeruginosa. 
B)  Bordetella pertussis. 
C)  Serratia marcescens. 
D)  Burkholderia cepacia. 
E)  Klebsiella pneumoniae. 
A)  Pseudomonas aeruginosa. 
B)  Bordetella pertussis. 
C)  Serratia marcescens. 
D)  Burkholderia cepacia. 
E)  Klebsiella pneumoniae.

Question 10

Strains of Neisseria spp. need which of the following structural features to be pathogenic?

Accepted Answer

A)  fimbriae 
B)  a capsule 
C)  lipooligosaccharide (LOS) in its wall 
D)  both a capsule and LOS 
E)  a capsule, fimbriae and an LOS 
A)  fimbriae 
B)  a capsule 
C)  lipooligosaccharide (LOS) in its wall 
D)  both a capsule and LOS 
E)  a capsule, fimbriae and an LOS

Question 11

Humans are the sole hosts of Salmonella typhi.

Accepted Answer

A) True 
 B)False

Question 12

Urinary tract infections with _ are frequently complicated by the formation of kidney stones.

Accepted Answer

A)  Salmonella species 
B)  Escherichia coli 
C)  Klebsiella pneumoniae 
D)  Bacteroides species 
E)  Proteus mirabilis 
A)  Salmonella species 
B)  Escherichia coli 
C)  Klebsiella pneumoniae 
D)  Bacteroides species 
E)  Proteus mirabilis

Question 13

Neisseria meningitidis is able to survive inside macrophages and be transported throughout the body in them.

Accepted Answer

A) True 
 B)False

Question 14

Inhalation of dried bodily fluids of infected animals may result in

Accepted Answer

A)  brucellosis. 
B)  Q fever. 
C)  tularemia. 
D)  both tularemia and brucellosis. 
E)  tularemia, brucellosis, and Q fever. 
A)  brucellosis. 
B)  Q fever. 
C)  tularemia. 
D)  both tularemia and brucellosis. 
E)  tularemia, brucellosis, and Q fever.

Question 15

Why is treatment with antimicrobial drugs NOT encouraged in patients with diarrhea caused by enteric bacteria?

Accepted Answer

Antimicrobial treatment of enteric diarr

Question 16

What is the characteristic lesion of Yersinia pestis?

Accepted Answer

A)  oozing abscesses in the intestinal wall 
B)  a bubo 
C)  a soft chancre 
D)  petechiae 
E)  a chancroid 
A)  oozing abscesses in the intestinal wall 
B)  a bubo 
C)  a soft chancre 
D)  petechiae 
E)  a chancroid

Question 17

Coliforms are distinguished from noncoliforms by their ability to ferment (glucose/citrate/lactose).

Accepted Answer

The answer of Coliforms are distinguished from noncoliforms by their...

Question 18

Which of the following statements regarding Coxiella is TRUE?

Accepted Answer

A)  It is a gastrointestinal pathogen. 
B)  It prefers a neutral environment. 
C)  It is an obligate intracellular parasite that escapes phagolysosomes to grow in the cytoplasm. 
D)  It produces an infective body similar in structure and function to Gram- positive endospores. 
E)  It is communicable from person to person. 
A)  It is a gastrointestinal pathogen. 
B)  It prefers a neutral environment. 
C)  It is an obligate intracellular parasite that escapes phagolysosomes to grow in the cytoplasm. 
D)  It produces an infective body similar in structure and function to Gram- positive endospores. 
E)  It is communicable from person to person.

Question 19

How do Prevotella differ from Bacteroides?

Accepted Answer

A)  Prevotella possess antiphagocytic capsules. 
B)  Prevotella are found in the intestinal, respiratory, and urinary tracts. 
C)  Prevotella are pleomorphic bacilli. 
D)  Prevotella are anaerobic. 
E)  Prevotella are sensitive to bile. 
A)  Prevotella possess antiphagocytic capsules. 
B)  Prevotella are found in the intestinal, respiratory, and urinary tracts. 
C)  Prevotella are pleomorphic bacilli. 
D)  Prevotella are anaerobic. 
E)  Prevotella are sensitive to bile.

Question 20

The major damage caused by Neisseria meningitidis is a result of

Accepted Answer

A)  its invasion into the central nervous system. 
B)  the fact that it can survive in cells after phagocytosis. 
C)  its presence in the respiratory tract of 40% of healthy individuals. 
D)  the release of the lipid A component of lipooligosaccharide (LOS) into the tissues, triggering serious symptoms. 
E)  its ability to be transmitted by droplets among people who live in close contact. 
A)  its invasion into the central nervous system. 
B)  the fact that it can survive in cells after phagocytosis. 
C)  its presence in the respiratory tract of 40% of healthy individuals. 
D)  the release of the lipid A component of lipooligosaccharide (LOS) into the tissues, triggering serious symptoms. 
E)  its ability to be transmitted by droplets among people who live in close contact.

Exam 20: Pathogenic Gram-Negative Cocci and Bacilli

Legionnaires' disease is diagnosed by

Unlike other Gram- negative opportunistic bacilli, Bacteroides are (aerotolerant/facultative/obligate) anaerobes.

A lesion called _ is characteristic of infection with Haemophilus ducreyi.

Moraxella is a common cause of bacteremia.

Because of the existence of (acute/symptomatic/asymptomatic) carriers, the eradication of meningococcal disease is unlikely.

Which of the following is the result of inhalation of aerosols of fresh water containing a bacterial parasite of protozoa?

Serratia is a coliform that

Lipid A causes which of the following symptoms?

A cystic fibrosis patient develops a severe respiratory infection that resists treatment with standard antibiotics. A specimen from the lungs is greenish in color and contains aerobic motile Gram- negative bacilli. The patient is probably infected with

Strains of Neisseria spp. need which of the following structural features to be pathogenic?

Humans are the sole hosts of Salmonella typhi.

Urinary tract infections with _ are frequently complicated by the formation of kidney stones.

Neisseria meningitidis is able to survive inside macrophages and be transported throughout the body in them.

Inhalation of dried bodily fluids of infected animals may result in

Why is treatment with antimicrobial drugs NOT encouraged in patients with diarrhea caused by enteric bacteria?

What is the characteristic lesion of Yersinia pestis?

Coliforms are distinguished from noncoliforms by their ability to ferment (glucose/citrate/lactose).

Which of the following statements regarding Coxiella is TRUE?

How do Prevotella differ from Bacteroides?

The major damage caused by Neisseria meningitidis is a result of

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