Question 1

Which of the following is an example of an exotoxin?

Accepted Answer

A)   neurotoxin
B)   coagulase
C)   lipid A
D)   streptokinase
E)   collagenaseF) B) and E)
G) C) and D)

Question 2

A reservoir isI417B418:I418

Accepted Answer

A)   a source of microbial contamination.
B)   an environment that is free of microbes.
C)   any microorganism that causes disease.
D)   a condition in which organisms remain in the body for a short time.
E)   a source of microbes for laboratory testing.F) C) and E)
G) D) and E)

Question 3

Commensalism is best described as a(n)

Accepted Answer

A)   unsuccessful microbial invasion due to the presence of preexisting microbes.
B)   relationship between two organisms where only one member benefits and the other is unharmed.
C)   relationship between two organisms where both members benefit.
D)   relationship in which a microorganism causes disease.
E)   source of contamination.F) A) and B)
G) C) and D)

Question 4

A syndrome is a group of symptoms and signs that collectively characterize a particular disease.

Accepted Answer

A) True 
 B)False  True

Question 5

In commensalism,one member of the relationship harms the other.

Accepted Answer

A) True 
 B)False

Question 6

Persons with asymptomatic infections may be (contaminants/reservoirs/zoonoses)of disease.

Accepted Answer

The answer of Persons with asymptomatic infections may be (contaminants/reservoirs/zoonoses)of...

Question 7

Among the virulence factors produced by Staphylococcus aureus are hemolysin,coagulase,hyaluronidase,and enterotoxin.Which of these factors contribute to the ability of S.aureus to invade the body?

Accepted Answer

A)   coagulase
B)   enterotoxin
C)   hemolysin
D)   hyaluronidase
E)   coagulase and hemolysinF) A) and D)
G) A) and E)

Question 8

All diseases go through the stages known as incubation period,prodromal period,and illness.

Accepted Answer

A) True 
 B)False  False

Question 9

A healthcare-associated (nosocomial) disease is a disease acquired

Accepted Answer

A)   by being bitten by an infected insect.
B)   by eating contaminated food.
C)   by using a contaminated needle.
D)   in a health care facility.
E)   by having unprotected sexual intercourse.F) A) and B)
G) C) and D)

Question 10

Places in the body where there is no normal microbiota are referred to as (sterile/aseptic/axenic).

Accepted Answer

The answer of Places in the body where there is...

Question 11

The degree to which a microbe is able to cause disease is known as its (morbidity/virulence/toxicity).

Accepted Answer

The answer of The degree to which a microbe is...

Question 12

Which of the following statements regarding the demonstration of the etiology of disease is FALSE?

Accepted Answer

A)   The suspect agent must be present in all cases of disease.
B)   The suspect agent must cause the disease under investigation when introduced into a susceptible host organism.
C)   The suspect agent must be isolated and cultured in the laboratory.
D)   It must be possible to reisolate the suspect agent from the infected experimental host.
E)   The suspect agent must be the only potential pathogen present in disease cases.F) A) and B)
G) All of the above

Question 13

Describe three types of reservoirs of infectious disease in humans.Give an example disease for each type of reservoir.

Accepted Answer

for a pathogen to enter a new host,it mu...

Question 14

Bacterial cells with capsules are resistant to killing by phagocytes.

Accepted Answer

A) True 
 B)False

Question 15

A strain of Neisseria gonorrhea has a mutation which has caused it to lose the ability to produce fimbriae and become less virulent as a consequence.What function has this pathogen lost?

Accepted Answer

A)   the ability to adhere to cells of the body
B)   the ability to move from one location in the body to another
C)   the ability to produce an endotoxin
D)   the ability to establish a latent infection
E)   the ability to prevent phagocytes killing itF) All of the above
G) A) and B)

Question 16

The condition known as microbial antagonism may be defined as

Accepted Answer

A)   microorganisms that remain with a person throughout life.
B)   a relationship between two organisms where one member harms the other.
C)   a relationship between two organisms where only one member benefits.
D)   an unsuccessful microbial invasion due to the presence of preexisting microbes.
E)   a relationship between two organisms where both members benefit.F) None of the above
G) All of the above

Question 17

Which of the following stages of an infectious disease is the most severe?

Accepted Answer

A)   the incubation period
B)   the prodromal period
C)   the illness period
D)   the decline period
E)   the convalescence periodF) C) and E)
G) A) and E)

Question 18

Which of the following is the correct sequence of a disease process?

Accepted Answer

A)   convalescence, incubation, prodromal period, illness, decline
B)   prodromal period, convalescence, incubation, illness, decline
C)   incubation, convalescence, prodromal period, illness, decline
D)   incubation, prodromal period, illness, decline, convalescence
E)   illness, convalescence, incubation, prodromal period, declineF) A) and D)
G) A) and E)

Question 19

The study of the cause of disease is known as (epidemiology/etiology/pathology).

Accepted Answer

etiology

Question 20

A pathogen is best described as

Accepted Answer

A)   a microorganism that remains with the person throughout life.
B)   any microorganism that causes disease.
C)   an organism that remains in the body for a short time.
D)   a microorganism that may cause a disease under certain circumstances.
E)   a source of microbial contamination.F) B) and C)
G) A) and C)

Exam 14: Infection, Infectious Diseases, and Epidemiology

Which of the following is an example of an exotoxin?

Correct AnswerverifiedShow Answer

A reservoir isI417B418:I418

Correct AnswerverifiedShow Answer

Commensalism is best described as a(n)

Correct AnswerverifiedShow Answer

A syndrome is a group of symptoms and signs that collectively characterize a particular disease.

Correct AnswerverifiedTrue

In commensalism,one member of the relationship harms the other.

Correct AnswerverifiedShow Answer

Persons with asymptomatic infections may be (contaminants/reservoirs/zoonoses)of disease.

Correct AnswerverifiedShow Answer

Among the virulence factors produced by Staphylococcus aureus are hemolysin,coagulase,hyaluronidase,and enterotoxin.Which of these factors contribute to the ability of S.aureus to invade the body?

Correct AnswerverifiedShow Answer

All diseases go through the stages known as incubation period,prodromal period,and illness.

Correct AnswerverifiedFalse

A healthcare-associated (nosocomial) disease is a disease acquired

Correct AnswerverifiedShow Answer

Places in the body where there is no normal microbiota are referred to as (sterile/aseptic/axenic).

Correct AnswerverifiedShow Answer

The degree to which a microbe is able to cause disease is known as its (morbidity/virulence/toxicity).

Correct AnswerverifiedShow Answer

Which of the following statements regarding the demonstration of the etiology of disease is FALSE?

Correct AnswerverifiedShow Answer

Describe three types of reservoirs of infectious disease in humans.Give an example disease for each type of reservoir.

Correct Answerverifiedfor a pathogen to enter a new host,it mu...View AnswerShow Answer

Bacterial cells with capsules are resistant to killing by phagocytes.

Correct AnswerverifiedShow Answer

A strain of Neisseria gonorrhea has a mutation which has caused it to lose the ability to produce fimbriae and become less virulent as a consequence.What function has this pathogen lost?

Correct AnswerverifiedShow Answer

The condition known as microbial antagonism may be defined as

Correct AnswerverifiedShow Answer

Which of the following stages of an infectious disease is the most severe?

Correct AnswerverifiedShow Answer

Which of the following is the correct sequence of a disease process?

Correct AnswerverifiedShow Answer

The study of the cause of disease is known as (epidemiology/etiology/pathology).

Correct Answerverifiedetiology

A pathogen is best described as

Correct AnswerverifiedShow Answer

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True

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False

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for a pathogen to enter a new host,it mu...
View Answer

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etiology

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