Question 1

Pseudomonas aeruginosa is a true pathogen with a long list of virulence factors.

Accepted Answer

A) True 
 B)False  False

Question 2

Bordetella pertussis causes disease by

Accepted Answer

A)  the development of pneumonia. 
B)  interfering with the action of the ciliated epithelial cells of the trachea. 
C)  suppressing the production of mucus by the respiratory lining. 
D)  forming a pseudomembrane that obstructs the larynx. 
E)  irritating the diaphragm, which leads to severe coughing attacks. 
A)  the development of pneumonia. 
B)  interfering with the action of the ciliated epithelial cells of the trachea. 
C)  suppressing the production of mucus by the respiratory lining. 
D)  forming a pseudomembrane that obstructs the larynx. 
E)  irritating the diaphragm, which leads to severe coughing attacks. B

Question 3

Which of the following statements about Neisseria gonorrhoeae is FALSE?

Accepted Answer

A)  It causes disease in humans only. 
B)  The gonococci stick to epithelial cells via fimbriae and capsules. 
C)  The gonococci secrete a protease that destroys secretory IgA. 
D)  The gonococci induce lasting immunity. 
E)  Infected women are often asymptomatic. 
A)  It causes disease in humans only. 
B)  The gonococci stick to epithelial cells via fimbriae and capsules. 
C)  The gonococci secrete a protease that destroys secretory IgA. 
D)  The gonococci induce lasting immunity. 
E)  Infected women are often asymptomatic. D

Question 4

MacConkey agar is selective for Haemophilus influenzae.

Accepted Answer

A) True 
 B)False

Question 5

Humans are the sole hosts of Salmonella enterica subtype Typhi (formerly S.typhi).

Accepted Answer

A) True 
 B)False

Question 6

What is the antimicrobial agent of choice for treating Bacteroides infections?

Accepted Answer

A)  erythromycin 
B)  tetracycline 
C)  metronidazole 
D)  cephalosporin 
E)  bacitracin 
A)  erythromycin 
B)  tetracycline 
C)  metronidazole 
D)  cephalosporin 
E)  bacitracin

Question 7

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 8

Which of the following are virulence factors contributing the pathogenicity of Neisseria species?

Accepted Answer

A)  hemolysin 
B)  fimbriae 
C)  a capsule 
D)  exotoxins 
E)  both a capsule and fimbriae 
A)  hemolysin 
B)  fimbriae 
C)  a capsule 
D)  exotoxins 
E)  both a capsule and fimbriae

Question 9

Salmonella and Shigella,both causes of diarrhea,can be distinguished by which of the following tests?

Accepted Answer

A)  lactose fermentation 
B)  oxidase test 
C)  motility 
D)  urease test 
E)  pigment production 
A)  lactose fermentation 
B)  oxidase test 
C)  motility 
D)  urease test 
E)  pigment production

Question 10

Serratia marcescens can be identified by its distinctive blue-green pigment pyocyanin.

Accepted Answer

A) True 
 B)False

Question 11

Members of the Enterobacteriaceae can be distinguished from each other by

Accepted Answer

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

Question 12

Infection with ________ usually produces acute upper respiratory disease but may cause meningitis in infants 3-18 months old.

Accepted Answer

A)  Klebsiella pneumoniae 
B)  Francisella tularensis 
C)  Coxiella burnetii 
D)  Haemophilus influenzae 
E)  Hafnia species 
A)  Klebsiella pneumoniae 
B)  Francisella tularensis 
C)  Coxiella burnetii 
D)  Haemophilus influenzae 
E)  Hafnia species

Question 13

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,nonmotile,oxidase-negative member...

Question 14

A virulence factor common to many members of the Enterobacteriaceae which permits them to deliver harmful proteins directly to cells is

Accepted Answer

A)  fimbriae. 
B)  a glycocalyx. 
C)  type III secretion system. 
D)  pili. 
E)  porins. 
A)  fimbriae. 
B)  a glycocalyx. 
C)  type III secretion system. 
D)  pili. 
E)  porins.

Question 15

What is the significance of the infective body formed by Coxiella bacteria,intracellular parasites that cause a zoonosis in humans?

Accepted Answer

A)  It uses actin filaments to move from cell to cell. 
B)  It is a resistant stage similar to an endospore. 
C)  It can grow in extracellular fluid for short periods of time. 
D)  It is only produced when Coxiella is in a tick. 
E)  It is a fragile stage found only inside cells. 
A)  It uses actin filaments to move from cell to cell. 
B)  It is a resistant stage similar to an endospore. 
C)  It can grow in extracellular fluid for short periods of time. 
D)  It is only produced when Coxiella is in a tick. 
E)  It is a fragile stage found only inside cells.

Question 16

A lesion called ________ is a characteristic of an infection with Haemophilus ducreyi.

Accepted Answer

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

Question 17

The small,oxidase positive nonmotile bacterium ________ is part of the normal microbiota of dogs,but bites can lead to infection in humans.

Accepted Answer

A)  Pasteurella 
B)  Hafnia 
C)  Salmonella 
D)  Enterobacter 
E)  Yersina 
A)  Pasteurella 
B)  Hafnia 
C)  Salmonella 
D)  Enterobacter 
E)  Yersina

Question 18

After a week of asymptomatic infection with Bordetella pertussis,the patient has cold-like (catarrhal)symptoms for a week or two followed by a period of severe paroxysmal episodes of coughing that leave the patient anoxic and fatigued.

Accepted Answer

A) True 
 B)False

Question 19

Cat scratch disease is caused by

Accepted Answer

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

Question 20

Pneumonia caused by Klebsiella pneumoniae often involves the destruction of (alveoli/macrophages/epithelium)and the production of bloody sputum.

Accepted Answer

The answer of Pneumonia caused by Klebsiella pneumoniae often involves...

Exam 20: Pathogenic Gram-Negative Cocci and Bacilli

Pseudomonas aeruginosa is a true pathogen with a long list of virulence factors.

Bordetella pertussis causes disease by

Which of the following statements about Neisseria gonorrhoeae is FALSE?

MacConkey agar is selective for Haemophilus influenzae.

Humans are the sole hosts of Salmonella enterica subtype Typhi (formerly S.typhi).

What is the antimicrobial agent of choice for treating Bacteroides infections?

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

Which of the following are virulence factors contributing the pathogenicity of Neisseria species?

Salmonella and Shigella,both causes of diarrhea,can be distinguished by which of the following tests?

Serratia marcescens can be identified by its distinctive blue-green pigment pyocyanin.

Members of the Enterobacteriaceae can be distinguished from each other by

Infection with ________ usually produces acute upper respiratory disease but may cause meningitis in infants 3-18 months old.

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

A virulence factor common to many members of the Enterobacteriaceae which permits them to deliver harmful proteins directly to cells is

What is the significance of the infective body formed by Coxiella bacteria,intracellular parasites that cause a zoonosis in humans?

A lesion called ________ is a characteristic of an infection with Haemophilus ducreyi.

The small,oxidase positive nonmotile bacterium ________ is part of the normal microbiota of dogs,but bites can lead to infection in humans.

After a week of asymptomatic infection with Bordetella pertussis,the patient has cold-like (catarrhal)symptoms for a week or two followed by a period of severe paroxysmal episodes of coughing that leave the patient anoxic and fatigued.

Cat scratch disease is caused by

Pneumonia caused by Klebsiella pneumoniae often involves the destruction of (alveoli/macrophages/epithelium)and the production of bloody sputum.

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 Diseases, 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

Filters