Question 1

A disease that has a steady frequency over time in a particular geographic location is ________.

Accepted Answer

A)  an epidemic
B)  endemic
C)  pandemic
D)  sporadic
E)  chronicF) A) and E)
G) All of the above

Question 2

Hyaluronidase is a virulence factor in ________.

Accepted Answer

A)  amoebic dysentery
B)  ringworm
C)  clostridia
D)  cold virus
E)  diphtheriaF) B) and E)
G) None of the above

Question 3

The time from when pathogen first enters the body and begins to multiply,until symptoms first appear is the ________.

Accepted Answer

A)  prodromal stage
B)  convalescent stage
C)  incubation period
D)  period of invasion
E)  None of the choices are correct.F) B) and E)
G) C) and D)

Question 4

Which of the following pairs is mismatched?

Accepted Answer

A)  Secondary infection - infection spreads to several tissue sites
B)  Mixed infection - several agents established at infection site
C)  Acute infection - rapid onset of severe,short-lived symptoms
D)  Local infection - pathogen remains at or near entry site
E)  Toxemia - pathogen's toxins carried by the blood to target tissuesF) D) and E)
G) B) and C)

Question 5

________ carriers are shedding and transmitting pathogens while they are recovering from an infectious disease.

Accepted Answer

A)  Asymptomatic
B)  Passive
C)  Incubation
D)  Chronic
E)  ConvalescentF) A) and E)
G) B) and C)

Question 6

Animals that participate in the life cycles of pathogens and transmit pathogens from host to host are ________.

Accepted Answer

A)  fomites
B)  aerosols
C)  mechanical vectors
D)  droplet nuclei
E)  biological vectorsF) A) and B)
G) A) and C)

Question 7

The virus that causes rabies,and the rhinovirus that causes the common cold are both considered true pathogens; the degree of pathogenicity is determined by their ________.

Accepted Answer

A)  virulence
B)  protein coat
C)  envelope
D)  infectivityE) B) and D)
F) None of the above

Question 8

Under certain circumstances,members of a person's resident biota can become opportunistic pathogens.

Accepted Answer

A) True 
 B)False

Question 9

Virulence differs from pathogenicity in that pathogenicity describes the ability of an organism to cause disease,whereas virulence describes the degree of pathogenicity as the disease develops.

Accepted Answer

A) True 
 B)False

Question 10

________ carriers are shedding and transmitting pathogens a long time after they have recovered from an infectious disease.

Accepted Answer

A)  Asymptomatic
B)  Passive
C)  Incubation
D)  Chronic
E)  ConvalescentF) A) and B)
G) A) and E)

Question 11

Exotoxins are ________.

Accepted Answer

A)  proteins.
B)  only released after a cell is damaged or lysed.
C)  antiphagocytic factors.
D)  secretions that always target nervous tissue.
E)  lipopolysaccharides.F) D) and E)
G) A) and B)

Question 12

An endotoxin is

Accepted Answer

A)  secreted by pathogenic organisms.
B)  indicative of gram-negative organisms.
C)  indicative of gram-positive organisms.
D)  indicative of fungal infections.
E)  indicative of viral infections.F) A) and D)
G) C) and E)

Question 13

A ________ is the presence of small numbers of bacteria in the blood.

Accepted Answer

A)  bacteremia
B)  septicemia
C)  viremia
D)  toxemia
E)  None of the choices are correct.F) B) and E)
G) A) and D)

Question 14

The greatest number of pathogens enter the body through the ________.

Accepted Answer

A)  respiratory system
B)  gastrointestinal system
C)  urinary system
D)  genital system
E)  skinF) C) and D)
G) B) and E)

Question 15

Latency is a dormant state of an infectious agent.

Accepted Answer

A) True 
 B)False

Question 16

While one person's microbiome differs when compared to another person,one individual's microbiome is uniform throughout the body; for example,the organisms on the left hand will be the same as the organisms on the right.

Accepted Answer

A) True 
 B)False

Question 17

Enterotoxins are ________.

Accepted Answer

A)  virulence factors
B)  toxins that target the intestines
C)  proteins
D)  exotoxins
E)  All of the choices are correct.F) A) and B)
G) A) and C)

Question 18

Infections that go unnoticed because there are no symptoms are called ________.

Accepted Answer

A)  syndromes
B)  malaises
C)  inflammation
D)  asymptomatic
E)  secondary infectionsF) None of the above
G) A) and B)

Question 19

Infection occurs when

Accepted Answer

A)  contaminants are present on the skin.
B)  a person swallows microbes in/on food.
C)  a person inhales microbes in the air.
D)  pathogens enter and multiply in body tissues.
E)  All of the choices are correct.F) All of the above
G) A) and E)

Question 20

The term infection refers to

Accepted Answer

A)  microorganisms colonizing the body.
B)  contact with microorganisms.
C)  contact with pathogens.
D)  pathogens penetrating host defenses.
E)  None of the choices are correct.F) B) and D)
G) A) and E)

Exam 11: Interactions Between Microbes and Humans

Infections that go unnoticed because there are no symptoms are called ________.

Correct AnswerverifiedShow Answer

Which of the following pairs is mismatched?

Correct AnswerverifiedShow Answer

The term infection refers to

Correct AnswerverifiedShow Answer

Enterotoxins are ________.

Correct AnswerverifiedShow Answer

________ carriers are shedding and transmitting pathogens while they are recovering from an infectious disease.

Correct AnswerverifiedShow Answer

An endotoxin is

Correct AnswerverifiedShow Answer

________ carriers are shedding and transmitting pathogens a long time after they have recovered from an infectious disease.

Correct AnswerverifiedShow Answer

Infection occurs when

Correct AnswerverifiedShow Answer

The time from when pathogen first enters the body and begins to multiply,until symptoms first appear is the ________.

Correct AnswerverifiedShow Answer

A disease that has a steady frequency over time in a particular geographic location is ________.

Correct AnswerverifiedShow Answer

Exotoxins are ________.

Correct AnswerverifiedShow Answer

Hyaluronidase is a virulence factor in ________.

Correct AnswerverifiedShow Answer

The virus that causes rabies,and the rhinovirus that causes the common cold are both considered true pathogens; the degree of pathogenicity is determined by their ________.

Correct AnswerverifiedShow Answer

Virulence differs from pathogenicity in that pathogenicity describes the ability of an organism to cause disease,whereas virulence describes the degree of pathogenicity as the disease develops.

Correct AnswerverifiedShow Answer

Latency is a dormant state of an infectious agent.

Correct AnswerverifiedShow Answer

While one person's microbiome differs when compared to another person,one individual's microbiome is uniform throughout the body; for example,the organisms on the left hand will be the same as the organisms on the right.

Correct AnswerverifiedShow Answer

A ________ is the presence of small numbers of bacteria in the blood.

Correct AnswerverifiedShow Answer

Animals that participate in the life cycles of pathogens and transmit pathogens from host to host are ________.

Correct AnswerverifiedShow Answer

The greatest number of pathogens enter the body through the ________.

Correct AnswerverifiedShow Answer

Under certain circumstances,members of a person's resident biota can become opportunistic pathogens.

Correct AnswerverifiedShow Answer

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