Question 1

A(n)________________ is a toxin made inside the pathogen and excreted into the external environment.

Accepted Answer

The answer of A(n)________________ is a toxin made inside the...

Question 2

The measure of the ability of a pathogen to cause severe disease in a host is called _______________.

Accepted Answer

The answer of The measure of the ability of a...

Question 3

A(n)_____________________ disease is an infectious disease of animals that can be transmitted to a human.

Accepted Answer

The answer of A(n)_____________________ disease is an infectious disease of...

Question 4

The incidence of a disease is the number of new cases of the disease in a population over a specific period of time.

Accepted Answer

A) True 
 B)False

Question 5

Term for an epidemic that occurs on multiple continents.

Accepted Answer

A)  endemic disease 
B)  outbreak 
C)  pandemic 
D)  emerging disease 
E)  re-emerging disease 
A)  endemic disease 
B)  outbreak 
C)  pandemic 
D)  emerging disease 
E)  re-emerging disease

Question 6

A single mutation in a pathogenic gene may cause the pathogen to become avirulent.

Accepted Answer

A) True 
 B)False

Question 7

A fomite is an inanimate object used for the transmission of a pathogenic agent.

Accepted Answer

A) True 
 B)False

Question 8

What often determines the host range of a pathogen?

Accepted Answer

A)  It's ability to replicate inside a host cell. 
B)  The exit strategy of the pathogen. 
C)  The ability of pathogen to attach to a host cell. 
D)  It's ability to destroy antibody. 
E)  Nutrient availability. 
A)  It's ability to replicate inside a host cell. 
B)  The exit strategy of the pathogen. 
C)  The ability of pathogen to attach to a host cell. 
D)  It's ability to destroy antibody. 
E)  Nutrient availability.

Question 9

Borrelia burgdorferi,the agent of Lyme disease,is found in nature in the white-footed mice and deer.Mice and deer are said to be _______________ for this pathogen.

Accepted Answer

The answer of Borrelia burgdorferi,the agent of Lyme disease,is found...

Question 10

Which of these would need to occur for a disease to be considered infectious?

Accepted Answer

A)  A susceptible host encounters an infectious agent. 
B)  An infectious agent colonizes a host. 
C)  An infectious agent colonizes a host and can be transmitted to another host. 
D)  An infectious agent causes damage to the host. 
E)  An infectious agent causes damage to the host and can be transmitted to another host. 
A)  A susceptible host encounters an infectious agent. 
B)  An infectious agent colonizes a host. 
C)  An infectious agent colonizes a host and can be transmitted to another host. 
D)  An infectious agent causes damage to the host. 
E)  An infectious agent causes damage to the host and can be transmitted to another host.

Question 11

Why is Koch's third postulate sometimes problematic?

Accepted Answer

Koch's third postulate can sometimes be

Question 12

Individuals that are carriers of a particular pathogen but do not develop the disease cannot transmit the pathogen to other individuals.

Accepted Answer

A) True 
 B)False

Question 13

Term for pathogen properties that aid it in causing disease.

Accepted Answer

A)  virulence factors 
B)  pathogenics 
C)  proteases 
D)  enhancers 
E)  promoters 
A)  virulence factors 
B)  pathogenics 
C)  proteases 
D)  enhancers 
E)  promoters

Question 14

Which one of the following statements is NOT one of Koch's postulates?

Accepted Answer

A)  Identify the suspected microbe in every person with the disease. 
B)  Isolate the suspected microbe in pure culture. 
C)  Identify virulence factors from the isolated microbe. 
D)  Inoculate the isolated microbe into a susceptible host to see if it causes the disease. 
E)  Recover the microbe from the experimentally inoculated host. 
A)  Identify the suspected microbe in every person with the disease. 
B)  Isolate the suspected microbe in pure culture. 
C)  Identify virulence factors from the isolated microbe. 
D)  Inoculate the isolated microbe into a susceptible host to see if it causes the disease. 
E)  Recover the microbe from the experimentally inoculated host.

Question 15

Primary pathogens are distinguished from opportunistic pathogens in that they always cause a more severe disease.

Accepted Answer

A) True 
 B)False

Question 16

Pathogens may cause damage to the host by ALL of the following mechanisms EXCEPT:

Accepted Answer

A)  induction of apoptosis in the host cell. 
B)  production of an exotoxin. 
C)  production of an endotoxin. 
D)  lysis of host cell. 
E)  replication in the host. 
A)  induction of apoptosis in the host cell. 
B)  production of an exotoxin. 
C)  production of an endotoxin. 
D)  lysis of host cell. 
E)  replication in the host.

Question 17

In order to cause disease,successful infectious pathogens must be able to do ALL of the following EXCEPT:

Accepted Answer

A)  gain entry to the host. 
B)  attach to and/or invade host cells. 
C)  evade host defenses. 
D)  exit the host. 
E)  kill the host. 
A)  gain entry to the host. 
B)  attach to and/or invade host cells. 
C)  evade host defenses. 
D)  exit the host. 
E)  kill the host.

Question 18

Which of these is true of an attenuated strain of a pathogenic microbe infecting a susceptible healthy host?

Accepted Answer

A)  The microbe will NOT replicate in the host. 
B)  The microbe will replicate in the host but not cause disease. 
C)  The microbe will replicate in the host and cause disease. 
D)  The microbe will replicate in the host and ultimately kill the host. 
E)  The microbe will NOT replicate in the host but will cause disease. 
A)  The microbe will NOT replicate in the host. 
B)  The microbe will replicate in the host but not cause disease. 
C)  The microbe will replicate in the host and cause disease. 
D)  The microbe will replicate in the host and ultimately kill the host. 
E)  The microbe will NOT replicate in the host but will cause disease.

Question 19

Term for newly identified infectious diseases or those with a recent significant increase in incidence.

Accepted Answer

A)  emerging diseases 
B)  new diseases 
C)  modern diseases 
D)  future diseases 
E)  special diseases 
A)  emerging diseases 
B)  new diseases 
C)  modern diseases 
D)  future diseases 
E)  special diseases

Question 20

Term for the number of NEW cases of a disease within a population during a specific time period.

Accepted Answer

A)  prevalence 
B)  incidence 
C)  occurrence 
D)  infectious dose 50 
E)  mortality rate 
A)  prevalence 
B)  incidence 
C)  occurrence 
D)  infectious dose 50 
E)  mortality rate

Exam 18: Introduction to Infectious Diseases

A(n)________________ is a toxin made inside the pathogen and excreted into the external environment.

The measure of the ability of a pathogen to cause severe disease in a host is called _______________.

A(n)_____________________ disease is an infectious disease of animals that can be transmitted to a human.

The incidence of a disease is the number of new cases of the disease in a population over a specific period of time.

Term for an epidemic that occurs on multiple continents.

A single mutation in a pathogenic gene may cause the pathogen to become avirulent.

A fomite is an inanimate object used for the transmission of a pathogenic agent.

What often determines the host range of a pathogen?

Borrelia burgdorferi,the agent of Lyme disease,is found in nature in the white-footed mice and deer.Mice and deer are said to be _______________ for this pathogen.

Which of these would need to occur for a disease to be considered infectious?

Why is Koch's third postulate sometimes problematic?

Individuals that are carriers of a particular pathogen but do not develop the disease cannot transmit the pathogen to other individuals.

Term for pathogen properties that aid it in causing disease.

Which one of the following statements is NOT one of Koch's postulates?

Primary pathogens are distinguished from opportunistic pathogens in that they always cause a more severe disease.

Pathogens may cause damage to the host by ALL of the following mechanisms EXCEPT:

In order to cause disease,successful infectious pathogens must be able to do ALL of the following EXCEPT:

Which of these is true of an attenuated strain of a pathogenic microbe infecting a susceptible healthy host?

Term for newly identified infectious diseases or those with a recent significant increase in incidence.

Term for the number of NEW cases of a disease within a population during a specific time period.

The Microbial World

Bacteria

Eukaryal Microbes

Archaea

Viruses

Cultivating Microorganisms

DNA Replication and Gene Expression

Viral Replication Strategies

Bacterial Genetic Analysis

Microbial Genomics

Regulation of Gene Expression

Microbial Biotechnology

Metabolism

Biogeochemical Cycles

Microbial Ecosystems

The Microbiology of Food and Water

Microbial Symbionts

Innate Host Defenses Against Microbial Invasion

Adaptive Immunity

Survival in the Host

Viral Pathogenesis

Eukaryal Microbe Pathogenesis

Control of Infectious Diseases

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