Question 1

Which of the following toxins produced by Bordetella pertussis results in the accumulation of excess mucus in the trachea?

Accepted Answer

A)  adenylate cyclase toxin 
B)  tracheal cytotoxin 
C)  pertussis toxin 
D)  both adenylate cyclase toxin and tracheal cytotoxin 
E)  both pertussis toxin and adenylate cyclase toxin 
A)  adenylate cyclase toxin 
B)  tracheal cytotoxin 
C)  pertussis toxin 
D)  both adenylate cyclase toxin and tracheal cytotoxin 
E)  both pertussis toxin and adenylate cyclase toxin

Question 2

Gonococcal infections result in lifelong immunity against Neisseria gonorrhoeae.

Accepted Answer

A) True 
 B)False

Question 3

Members of the Enterobacteriaceae can be distinguished from each other by

Accepted Answer

A)  both motility and the ability to ferment lactose. 
B)  motility. 
C)  the presence or absence of the enzyme oxidase. 
D)  both motility and the presence or absence of the enzyme oxidase. 
E)  the ability to ferment lactose. 
A)  both motility and the ability to ferment lactose. 
B)  motility. 
C)  the presence or absence of the enzyme oxidase. 
D)  both motility and the presence or absence of the enzyme oxidase. 
E)  the ability to ferment lactose.

Question 4

Enterobacteriaceae are rarely pathogenic.

Accepted Answer

A) True 
 B)False

Question 5

What is the causative pathogen for bubonic and pneumonic plague?

Accepted Answer

A)  Salmonella enterica 
B)  Yersinia enterocolitica 
C)  Yersinia pestis 
D)  Salmonella flexneri 
E)  Yersinia pseudotuberculosis 
A)  Salmonella enterica 
B)  Yersinia enterocolitica 
C)  Yersinia pestis 
D)  Salmonella flexneri 
E)  Yersinia pseudotuberculosis

Question 6

Pseudomonas aeruginosa is an opportunistic pathogen because it is not (anaerobic/invasive/virulent).

Accepted Answer

The answer of Pseudomonas aeruginosa is an opportunistic pathogen because...

Question 7

The zoonotic infection _ in humans is characterized by fluctuating fever and chills, sweating, myalgia, and headache.

Accepted Answer

A)  trench fever 
B)  brucellosis 
C)  rabbit fever 
D)  Q fever 
E)  bartonellosis 
A)  trench fever 
B)  brucellosis 
C)  rabbit fever 
D)  Q fever 
E)  bartonellosis

Question 8

The true pathogen (Salmonella/Shigella/Yersinia) is a noncoliform, nonmotile,
oxidase- negative member of the Enterobacteriaceae that does not produce hydrogen sulfide.

Accepted Answer

The answer of The true pathogen (Salmonella/Shigella/Yersinia) is a noncoliform,...

Question 9

Hemolytic uremic syndrome is caused by

Accepted Answer

A)  Bacteroides fragilis. 
B)  Escherichia coli O157:H7. 
C)  Enterobacter. 
D)  Serratia marcescens. 
E)  Proteus mirabilis. 
A)  Bacteroides fragilis. 
B)  Escherichia coli O157:H7. 
C)  Enterobacter. 
D)  Serratia marcescens. 
E)  Proteus mirabilis.

Question 10

Which of the following diseases is transmitted by the bite of human body lice?

Accepted Answer

A)  bubonic plague 
B)  brucellosis 
C)  Pontiac fever 
D)  tularemia 
E)  trench fever 
A)  bubonic plague 
B)  brucellosis 
C)  Pontiac fever 
D)  tularemia 
E)  trench fever

Question 11

Haemophilus ducreyi is transmitted by sexual contact.

Accepted Answer

A) True 
 B)False

Question 12

Undiagnosed or untreated infections with Neisseria gonorrhoeae in can progress to

Accepted Answer

A)  trench fever. 
B)  pelvic inflammatory disease (PI
D) . 
C)  Q fever. 
D)  meningococcal meningitis. 
E)  bubonic plague. 
A)  trench fever. 
B)  pelvic inflammatory disease (PI
D) . 
C)  Q fever. 
D)  meningococcal meningitis. 
E)  bubonic plague.

Question 13

Neisseria gonorrhoeae infection in men is

Accepted Answer

A)  only symptomatic in advanced stages of disease. 
B)  symptomatic in about 50% of the population, causing mild urethritis. 
C)  an acute painful infection with pus discharge. 
D)  usually a bladder infection. 
E)  usually asymptomatic. 
A)  only symptomatic in advanced stages of disease. 
B)  symptomatic in about 50% of the population, causing mild urethritis. 
C)  an acute painful infection with pus discharge. 
D)  usually a bladder infection. 
E)  usually asymptomatic.

Question 14

Cat scratch disease is caused by

Accepted Answer

A)  Bartonella peliosis. 
B)  Bartonella quintana. 
C)  Bartonella henselae. 
D)  Bartonella angiomatosis. 
E)  Bartonella bacilliformis. 
A)  Bartonella peliosis. 
B)  Bartonella quintana. 
C)  Bartonella henselae. 
D)  Bartonella angiomatosis. 
E)  Bartonella bacilliformis.

Question 15

Among the variety of virulence factors possessed by pathogenic enteric bacteria, which one allows them to evade the immune surveillance of its host?

Accepted Answer

Most pathogenic enteric bacteria possess

Question 16

By controlling the genetic expression of Vi and H antigens, Salmonella evades the host's immune system and manages to survive.

Accepted Answer

A) True 
 B)False

Question 17

The zoonosis (brucellosis/bartonellosis/tularemia) can be acquired by humans in a variety of ways, including insect bites and ingestion of infected animals.

Accepted Answer

The answer of The zoonosis (brucellosis/bartonellosis/tularemia) can be acquired by...

Question 18

How is pneumonic plague transmitted?

Accepted Answer

A)  bite of a flea carrying Yersinia pestis 
B)  inhalation of respiratory aerosols from a person infected with Yersinia pestis 
C)  bite of a tick carrying Yersinia pestis 
D)  contact with the blood of a person infected with Yersinia pestis 
E)  fomite contact 
A)  bite of a flea carrying Yersinia pestis 
B)  inhalation of respiratory aerosols from a person infected with Yersinia pestis 
C)  bite of a tick carrying Yersinia pestis 
D)  contact with the blood of a person infected with Yersinia pestis 
E)  fomite contact

Question 19

Dermonecrotic toxin is produced during (pertussis/Legionellosis/shigellosis) and causes localized constriction and hemorrhage of blood vessels, resulting in cell death and tissue destruction.

Accepted Answer

The answer of Dermonecrotic toxin is produced during (pertussis/Legionellosis/shigellosis) and...

Question 20

What virulence factor(s) do all proteobacteria share?

Accepted Answer

A)  lipid A 
B)  fimbriae 
C)  proteases that destroy IgA antibodies 
D)  a glycocalyx 
E)  both fimbriae and a glycocalyx 
A)  lipid A 
B)  fimbriae 
C)  proteases that destroy IgA antibodies 
D)  a glycocalyx 
E)  both fimbriae and a glycocalyx

Exam 20: Pathogenic Gram-Negative Cocci and Bacilli

Which of the following toxins produced by Bordetella pertussis results in the accumulation of excess mucus in the trachea?

Gonococcal infections result in lifelong immunity against Neisseria gonorrhoeae.

Members of the Enterobacteriaceae can be distinguished from each other by

Enterobacteriaceae are rarely pathogenic.

What is the causative pathogen for bubonic and pneumonic plague?

Pseudomonas aeruginosa is an opportunistic pathogen because it is not (anaerobic/invasive/virulent).

The zoonotic infection _ in humans is characterized by fluctuating fever and chills, sweating, myalgia, and headache.

The true pathogen (Salmonella/Shigella/Yersinia) is a noncoliform, nonmotile, oxidase- negative member of the Enterobacteriaceae that does not produce hydrogen sulfide.

Hemolytic uremic syndrome is caused by

Which of the following diseases is transmitted by the bite of human body lice?

Haemophilus ducreyi is transmitted by sexual contact.

Undiagnosed or untreated infections with Neisseria gonorrhoeae in can progress to

Neisseria gonorrhoeae infection in men is

Cat scratch disease is caused by

Among the variety of virulence factors possessed by pathogenic enteric bacteria, which one allows them to evade the immune surveillance of its host?

By controlling the genetic expression of Vi and H antigens, Salmonella evades the host's immune system and manages to survive.

The zoonosis (brucellosis/bartonellosis/tularemia) can be acquired by humans in a variety of ways, including insect bites and ingestion of infected animals.

How is pneumonic plague transmitted?

Dermonecrotic toxin is produced during (pertussis/Legionellosis/shigellosis) and causes localized constriction and hemorrhage of blood vessels, resulting in cell death and tissue destruction.

What virulence factor(s) do all proteobacteria share?

A Brief History of Microbiology

The Chemistry of Microbiology

Cell Structure and Function

Microscopy, Staining, and Classification

Microbial Metabolism

Microbial Nutrition and Growth

Microbial Genetics

Recombinant Dna Technology

Controlling Microbial Growth in the Environment

Controlling Microbial Growth in the Body: Antimicrobial Drugs

Characterizing and Classifying Prokaryotes

Characterizing and Classifying Eukaryotes

Characterizing and Classifying Viruses, Viroids, and Prions

Infection, Infectious Disease, and Epidemiology

Innate Immunity

Adaptive Immunity

Immunization and Immune Testing

Immune Disorders

Pathogenic Gram-Positive Bacteria

Rickettsias, Chlamydias, Spirochetes, and Vibrios

Pathogenic Fungi

Parasitic Protozoa, Helminths, and Arthropod Vectors

Pathogenic Dna Viruses

Pathogenic Rna Viruses

Applied and Environmental Microbiology

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