Question 1

Some scientists believe that Shigella may actually be a strain of Escherichia coli that has become oxidase positive.

Accepted Answer

A) True 
 B)False

Question 2

Several cases of nonbloody diarrhea with nausea, fever, and abdominal pain have occurred among a number of people who ate at the same restaurant. Public health officers find a food sample containing motile noncoliform, Gram- negative bacteria capable of metabolizing glucose. The "food poisoning" resulted from contamination with

Accepted Answer

A)  Shigella. 
B)  Yersinia. 
C)  Citrobacter. 
D)  Salmonella. 
E)  Escherichia coli. 
A)  Shigella. 
B)  Yersinia. 
C)  Citrobacter. 
D)  Salmonella. 
E)  Escherichia coli.

Question 3

Coxiella burnetii is transmitted to humans mainly via the bite of infected tick vectors.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following statements concerning Pasteurella is FALSE?

Accepted Answer

A)  Humans are typically infected via animal bites. 
B)  It is very resistant to a wide variety of antibacterial drugs including fluoroquinolones. 
C)  It is nonmotile. 
D)  It is fastidious in its growth and must be cultivated on blood or chocolate agar. 
E)  It is oxidase positive. 
A)  Humans are typically infected via animal bites. 
B)  It is very resistant to a wide variety of antibacterial drugs including fluoroquinolones. 
C)  It is nonmotile. 
D)  It is fastidious in its growth and must be cultivated on blood or chocolate agar. 
E)  It is oxidase positive.

Question 5

Lipid A causes disseminated intravenous coagulation (DIC).

Accepted Answer

A) True 
 B)False

Question 6

The pleomorphic bacterium (Coxiella/Legionella/Francisella) is an intracellular parasite that can lead to respiratory disease when inhaled in aerosols from freshwater sources.

Accepted Answer

The answer of The pleomorphic bacterium (Coxiella/Legionella/Francisella) is an intracellular...

Question 7

This growth pattern is characteristic of which organism?

Accepted Answer

A)  Klebsiella 
B)  Shigella 
C)  Salmonella 
D)  Pseudomonas 
E)  Proteus 
A)  Klebsiella 
B)  Shigella 
C)  Salmonella 
D)  Pseudomonas 
E)  Proteus

Question 8

What is the causative pathogen of Q fever?

Accepted Answer

A)  Acinetobacter 
B)  Bacteroides fragilis 
C)  Moraxella catarrhalis 
D)  Prevotella 
E)  Coxiella burnetii 
A)  Acinetobacter 
B)  Bacteroides fragilis 
C)  Moraxella catarrhalis 
D)  Prevotella 
E)  Coxiella burnetii

Question 9

Which of the following diseases can be prevented by vaccination?

Accepted Answer

A)  salmonellosis 
B)  gonorrhea 
C)  cat scratch disease 
D)  typhoid fever 
E)  chancroid 
A)  salmonellosis 
B)  gonorrhea 
C)  cat scratch disease 
D)  typhoid fever 
E)  chancroid

Question 10

Scientists have identified over 2000 unique serotypes of Salmonella, but DNA analysis indicates that they belong to a single species: S. (enterica/typhi/paratyphi).

Accepted Answer

The answer of Scientists have identified over 2000 unique serotypes...

Question 11

Which of the following is diagnostic for Neisseria meningitidis?

Accepted Answer

A)  the presence of Gram- negative diplococci in phagocytes of the central nervous system 
B)  the lack of lipooligosaccharide 
C)  the presence of lipid A 
D)  its inability to ferment maltose 
E)  the lack of fimbriae 
A)  the presence of Gram- negative diplococci in phagocytes of the central nervous system 
B)  the lack of lipooligosaccharide 
C)  the presence of lipid A 
D)  its inability to ferment maltose 
E)  the lack of fimbriae

Question 12

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

Accepted Answer

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

Question 13

What metabolic characteristic distinguishes Enterobacteriaceae from Pasteurellaceae?

Accepted Answer

A)  Enterobacteriaceae are facultative anaerobes. 
B)  Pasteurellaceae are oxidase positive. 
C)  Pasteurellaceae are facultative anaerobes. 
D)  Enterobacteriaceae are oxidase positive. 
E)  Enterobacteriaceae ferment lactose. 
A)  Enterobacteriaceae are facultative anaerobes. 
B)  Pasteurellaceae are oxidase positive. 
C)  Pasteurellaceae are facultative anaerobes. 
D)  Enterobacteriaceae are oxidase positive. 
E)  Enterobacteriaceae ferment lactose.

Question 14

Resistance of Pseudomonas to a wide range of antibacterial agents is partly due to its

Accepted Answer

A)  ability to utilize a wide range of organic and nitrogen sources. 
B)  use of the Entner- Doudoroff pathway as its major means of catabolizing glucose. 
C)  ability to form biofilms. 
D)  lack of special requirements for growth. 
E)  production of exoenzyme S. 
A)  ability to utilize a wide range of organic and nitrogen sources. 
B)  use of the Entner- Doudoroff pathway as its major means of catabolizing glucose. 
C)  ability to form biofilms. 
D)  lack of special requirements for growth. 
E)  production of exoenzyme S.

Question 15

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

Accepted Answer

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

Question 16

Compare and contrast acute bacterial meningitis and meningococcal meningitis, including etiologic agents, pathology, and epidemiology.

Accepted Answer

Both diseases are transmitted in aerosol

Question 17

MacConkey agar is selective for Haemophilus influenzae.

Accepted Answer

A) True 
 B)False

Exam 20: Pathogenic Gram-Negative Cocci and Bacilli

Some scientists believe that Shigella may actually be a strain of Escherichia coli that has become oxidase positive.

Coxiella burnetii is transmitted to humans mainly via the bite of infected tick vectors.

Which of the following statements concerning Pasteurella is FALSE?

Lipid A causes disseminated intravenous coagulation (DIC).

The pleomorphic bacterium (Coxiella/Legionella/Francisella) is an intracellular parasite that can lead to respiratory disease when inhaled in aerosols from freshwater sources.

This growth pattern is characteristic of which organism?

What is the causative pathogen of Q fever?

Which of the following diseases can be prevented by vaccination?

Scientists have identified over 2000 unique serotypes of Salmonella, but DNA analysis indicates that they belong to a single species: S. (enterica/typhi/paratyphi).

Which of the following is diagnostic for Neisseria meningitidis?

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

What metabolic characteristic distinguishes Enterobacteriaceae from Pasteurellaceae?

Resistance of Pseudomonas to a wide range of antibacterial agents is partly due to its

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

Compare and contrast acute bacterial meningitis and meningococcal meningitis, including etiologic agents, pathology, and epidemiology.

MacConkey agar is selective for Haemophilus influenzae.

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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