Question 1

Matching
1)Latent
2)Antitoxin
3)Opportunistic
4)Localized
A.Requires weakened immune system.
B.Organisms present in tissue for long periods of time.
C.Not general infection.
D.A neutralizing antibody.

Accepted Answer

The answer of Matching
1)Latent
2)Antitoxin
3)Opportunistic
4)Localized
A.Requires weakened immune system.
B.Organisms present in tissue...

Question 2

The final outcome of most host-parasite relationships depends on

Accepted Answer

A)  the number of organisms present in or on the host.
B)  the virulence of the organism.
C)  the host's defenses.
D)  all of the choicesE) A) and D)
F) A) and C)

Question 3

Which of the following is a facultative intracellular pathogen?

Accepted Answer

A)  Viruses
B)  Brucella abortus
C)  Rickettsia
D)  All of the choicesE) None of the above
F) B) and C)

Question 4

Virulence may be measured experimentally at the host level by the __________ __________ __________,which measures the number of pathogens that kills 50% of an experimental group of hosts within a specified amount of time.

Accepted Answer

The answer of Virulence may be measured experimentally at the...

Question 5

An inanimate object that may be contaminated with a pathogen is called a

Accepted Answer

A)  vector.
B)  fomite.
C)  zoonoses.
D)  none of the choicesE) A) and C)
F) A) and B)

Question 6

Macrophages are phagocytic cells.

Accepted Answer

A) True 
 B)False

Question 7

An organism other than a human that is infected with a parasitic organism that can also infect humans is called a(n) ________ host.

Accepted Answer

A)  reservoir.
B)  endoparasite.
C)  transfer.
D)  intermediate.E) B) and C)
F) A) and D)

Question 8

Generally,exotoxins tend to be more heat stable than endotoxins.

Accepted Answer

A) True 
 B)False

Question 9

Many bacteria are pathogenic because they carry large segments of DNA called __________ _________,which were acquired by horizontal gene transfer,and which carry genes responsible for virulence.

Accepted Answer

pathogenic...

Question 10

Which of the following is required of a pathogen to possess in order for it to be successful at causing infectious disease?

Accepted Answer

A)  Initially be transported to the host.
B)  Be able to exit the host.
C)  Ability to adhere to,colonize,or invade the host.
D)  Ability to damage the host.
E)  All of the choices.F) B) and D)
G) B) and E)

Question 11

The condition in the host that results from pathogenic parasitic organism growing and multiplying within or on the host is called

Accepted Answer

A)  an infection.
B)  an infectious disease.
C)  pathogenesis.
D)  all of these.E) All of the above
F) None of the above

Question 12

The characteristics of a pathogen that determine its virulence include which of the following?

Accepted Answer

A)  pathogenicity
B)  invasiveness
C)  infectivity
D)  all of the choicesE) B) and C)
F) A) and D)

Question 13

A ________________ infection is a disease caused by a parasitic organism that is normally found in animals other than humans.

Accepted Answer

The answer of A ________________ infection is a disease caused...

Question 14

The capacity of an organism to produce a toxin is called __________.

Accepted Answer

The answer of The capacity of an organism to produce...

Question 15

Which of the following is not a characteristic of lipid A?

Accepted Answer

A)  heat stable.
B)  toxic in nanogram amounts.
C)  weakly immunogenic.
D)  neurotoxic.E) C) and D)
F) All of the above

Question 16

Endotoxins include which of the following?

Accepted Answer

A)  diphtheria toxin
B)  lipopolysaccharide
C)  tetanus toxin
D)  botulinum toxinE) All of the above
F) A) and B)

Question 17

Exotoxins can be denatured by iodine to form __________ which are useful in vaccines.

Accepted Answer

The answer of Exotoxins can be denatured by iodine to...

Question 18

Many types of bacteria are only _________ when dispersing from more stable and heterogeneous communities known as biofilms.

Accepted Answer

The answer of Many types of bacteria are only _________...

Question 19

Matching
1)Reservoir
2)Fomite
3)Opportunistic
4)Nosocomial
A.Does not harm a healthy host.
B.Develops during a hospital stay.
C.Site where the pathogen normally resides.
D.Inanimate object that may be involved in transmission.

Accepted Answer

The answer of Matching
1)Reservoir
2)Fomite
3)Opportunistic
4)Nosocomial
A.Does not harm a healthy host.
B.Develops during...

Question 20

Inanimate materials involved in pathogen transmission are called reservoirs.

Accepted Answer

A) True 
 B)False

Exam 35: Pathogenicity and Infection

Many types of bacteria are only _________ when dispersing from more stable and heterogeneous communities known as biofilms.

Correct AnswerverifiedShow Answer

Which of the following is a facultative intracellular pathogen?

Correct AnswerverifiedShow Answer

Macrophages are phagocytic cells.

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Generally,exotoxins tend to be more heat stable than endotoxins.

Correct AnswerverifiedShow Answer

Which of the following is not a characteristic of lipid A?

Correct AnswerverifiedShow Answer

The capacity of an organism to produce a toxin is called __________.

Correct AnswerverifiedShow Answer

The final outcome of most host-parasite relationships depends on

Correct AnswerverifiedShow Answer

A ________________ infection is a disease caused by a parasitic organism that is normally found in animals other than humans.

Correct AnswerverifiedShow Answer

Many bacteria are pathogenic because they carry large segments of DNA called __________ _________,which were acquired by horizontal gene transfer,and which carry genes responsible for virulence.

Correct Answerverifiedpathogenic...View AnswerShow Answer

An organism other than a human that is infected with a parasitic organism that can also infect humans is called a(n) ________ host.

Correct AnswerverifiedShow Answer

An inanimate object that may be contaminated with a pathogen is called a

Correct AnswerverifiedShow Answer

Virulence may be measured experimentally at the host level by the __________ __________ __________,which measures the number of pathogens that kills 50% of an experimental group of hosts within a specified amount of time.

Correct AnswerverifiedShow Answer

Endotoxins include which of the following?

Correct AnswerverifiedShow Answer

Matching 1)Latent 2)Antitoxin 3)Opportunistic 4)Localized A.Requires weakened immune system. B.Organisms present in tissue for long periods of time. C.Not general infection. D.A neutralizing antibody.

Correct AnswerverifiedShow Answer

Which of the following is required of a pathogen to possess in order for it to be successful at causing infectious disease?

Correct AnswerverifiedShow Answer

Matching 1)Reservoir 2)Fomite 3)Opportunistic 4)Nosocomial A.Does not harm a healthy host. B.Develops during a hospital stay. C.Site where the pathogen normally resides. D.Inanimate object that may be involved in transmission.

Correct AnswerverifiedShow Answer

Inanimate materials involved in pathogen transmission are called reservoirs.

Correct AnswerverifiedShow Answer

Exotoxins can be denatured by iodine to form __________ which are useful in vaccines.

Correct AnswerverifiedShow Answer

The condition in the host that results from pathogenic parasitic organism growing and multiplying within or on the host is called

Correct AnswerverifiedShow Answer

The characteristics of a pathogen that determine its virulence include which of the following?

Correct AnswerverifiedShow Answer

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Many bacteria are pathogenic because they carry large segments of DNA called __ _,which were acquired by horizontal gene transfer,and which carry genes responsible for virulence.

Correct Answer
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pathogenic...
View Answer

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Virulence may be measured experimentally at the host level by the __,which measures the number of pathogens that kills 50% of an experimental group of hosts within a specified amount of time.

Correct Answer
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