Question 1

Salmonella and Shigella both

Accepted Answer

A)  produce shiga toxin. 
B)  are Gram-positive rods. 
C)  are resistant to gastric acid. 
D)  cause typhoid fever. 
E)  are facultative intracellular pathogens. 
A)  produce shiga toxin. 
B)  are Gram-positive rods. 
C)  are resistant to gastric acid. 
D)  cause typhoid fever. 
E)  are facultative intracellular pathogens.

Question 2

Which of the following is considered a virulence factor?

Accepted Answer

A)  TNF-Alpha 
B)  RNA 
C)  IFN-gamma 
D)  Strep. pyogenes 
E)  capsules 
A)  TNF-Alpha 
B)  RNA 
C)  IFN-gamma 
D)  Strep. pyogenes 
E)  capsules

Question 3

What type of toxin is the alpha hemolysin of Staphylococcus aureus?

Accepted Answer

A)  protein synthesis inhibitor 
B)  protease 
C)  superantigen 
D)  cell membrane disruptor 
E)  second messenger pathway disruptor 
A)  protein synthesis inhibitor 
B)  protease 
C)  superantigen 
D)  cell membrane disruptor 
E)  second messenger pathway disruptor

Question 4

Biofilms play a major role in enhancing bacterial virulence because

Accepted Answer

A)  biofilm strains are mutants. 
B)  the exopolymer matrix is highly toxic and mutagenic. 
C)  biofilm bacteria are intracellular pathogens. 
D)  bacteria in biofilms are more resistant to antimicrobials and phagocytosis. 
E)  low bacteria density does not alert the human immune system. 
A)  biofilm strains are mutants. 
B)  the exopolymer matrix is highly toxic and mutagenic. 
C)  biofilm bacteria are intracellular pathogens. 
D)  bacteria in biofilms are more resistant to antimicrobials and phagocytosis. 
E)  low bacteria density does not alert the human immune system.

Question 5

Pathogenicity islands include all of the following EXCEPT that

Accepted Answer

A)  genes are not expressed as operons. 
B)  GC/AT ratio differs from the rest of the genome. 
C)  residual phage genomes flank the island. 
D)  they are often linked to tRNA. 
E)  they encode the type III protein secretion (T3SS) export systems. 
A)  genes are not expressed as operons. 
B)  GC/AT ratio differs from the rest of the genome. 
C)  residual phage genomes flank the island. 
D)  they are often linked to tRNA. 
E)  they encode the type III protein secretion (T3SS) export systems.

Question 6

The current classification of bacteria pili is based on ________ rather than ________.

Accepted Answer

A)  phenotype; function 
B)  function; amino acid sequence 
C)  protein sequence; phenotype 
D)  origin; protein sequence 
E)  size; phenotype 
A)  phenotype; function 
B)  function; amino acid sequence 
C)  protein sequence; phenotype 
D)  origin; protein sequence 
E)  size; phenotype

Question 7

Which of the following diseases is transmitted by the mosquito Aedes aegypti?

Accepted Answer

A)  yellow fever 
B)  Ebola 
C)  epidemic typhus 
D)  listeriosis 
E)  SARS 
A)  yellow fever 
B)  Ebola 
C)  epidemic typhus 
D)  listeriosis 
E)  SARS

Question 8

The likely mode of transmission of a bacterial disease in which incidence increases with a prolonged warm summer is

Accepted Answer

A)  direct transmission. 
B)  airborne transmission. 
C)  insect vector transmission. 
D)  common source fomite. 
E)  sexual transmission. 
A)  direct transmission. 
B)  airborne transmission. 
C)  insect vector transmission. 
D)  common source fomite. 
E)  sexual transmission.

Question 9

Microbes can be transmitted indirectly from one person to another by inanimate objects, collectively called fomites. Describe the role of fomites in the spread of influenza.

Accepted Answer

The influenza virus can be spread by aer

Question 10

Which of the following types of information CANNOT be derived from the full genome of a noncultured bacterial pathogen?

Accepted Answer

A)  nutritional requirements 
B)  toxin production 
C)  infectious and lethal doses 
D)  pathogenic islands 
E)  cell receptor binding and tissue tropism 
A)  nutritional requirements 
B)  toxin production 
C)  infectious and lethal doses 
D)  pathogenic islands 
E)  cell receptor binding and tissue tropism

Salmonella and Shigella both

Which of the following is considered a virulence factor?

What type of toxin is the alpha hemolysin of Staphylococcus aureus?

Biofilms play a major role in enhancing bacterial virulence because

Pathogenicity islands include all of the following EXCEPT that

The current classification of bacteria pili is based on rather than .

Which of the following diseases is transmitted by the mosquito Aedes aegypti?

The likely mode of transmission of a bacterial disease in which incidence increases with a prolonged warm summer is

Microbes can be transmitted indirectly from one person to another by inanimate objects, collectively called fomites. Describe the role of fomites in the spread of influenza.

Which of the following types of information CANNOT be derived from the full genome of a noncultured bacterial pathogen?

Microbial Life: Origin and Discovery

Observing the Microbial Cell

Cell Structure and Function

Bacterial Culture, Growth, and Development

Environmental Influences and Control of Microbial Growth

Viruses

Genomes and Chromosomes

Transcription, Translation, and Bioinformatics

Gene Transfer, Mutations, and Genome Evolution

Molecular Regulation

Viral Molecular Biology

Biotechniques and Synthetic Biology

Energetics and Catabolism

Electron Flow in Organotrophy, Lithotrophy, and Phototrophy

Biosynthesis

Food and Industrial Microbiology

Origins and Evolution

Bacterial Diversity

Archaeal Diversity

Eukaryotic Diversity

Microbial Ecology

Microbes in Global Elemental Cycles

Human Microbiota and Innate Immunity

The Adaptive Immune Response

Microbial Diseases

Antimicrobial Therapy

Clinical Microbiology and Epidemiology

Filters

Exam 25: Microbial Pathogenesis

Salmonella and Shigella both

Which of the following is considered a virulence factor?

What type of toxin is the alpha hemolysin of Staphylococcus aureus?

Biofilms play a major role in enhancing bacterial virulence because

Pathogenicity islands include all of the following EXCEPT that

The current classification of bacteria pili is based on ________ rather than ________.

Which of the following diseases is transmitted by the mosquito Aedes aegypti?

The likely mode of transmission of a bacterial disease in which incidence increases with a prolonged warm summer is

Microbes can be transmitted indirectly from one person to another by inanimate objects, collectively called fomites. Describe the role of fomites in the spread of influenza.

Which of the following types of information CANNOT be derived from the full genome of a noncultured bacterial pathogen?

Microbial Life: Origin and Discovery

Observing the Microbial Cell

Cell Structure and Function

Bacterial Culture, Growth, and Development

Environmental Influences and Control of Microbial Growth

Viruses

Genomes and Chromosomes

Transcription, Translation, and Bioinformatics

Gene Transfer, Mutations, and Genome Evolution

Molecular Regulation

Viral Molecular Biology

Biotechniques and Synthetic Biology

Energetics and Catabolism

Electron Flow in Organotrophy, Lithotrophy, and Phototrophy

Biosynthesis

Food and Industrial Microbiology

Origins and Evolution

Bacterial Diversity

Archaeal Diversity

Eukaryotic Diversity

Microbial Ecology

Microbes in Global Elemental Cycles

Human Microbiota and Innate Immunity

The Adaptive Immune Response

Microbial Diseases

Antimicrobial Therapy

Clinical Microbiology and Epidemiology

Filters

The current classification of bacteria pili is based on rather than .