Question 1

Because LPS is bound to the surface of bacteria, it is called a(n) __________.

Accepted Answer

The answer of Because LPS is bound to the surface...

Question 2

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

Accepted Answer

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

Question 3

The presence of viruses in the blood is called _______________.

Accepted Answer

The answer of The presence of viruses in the blood...

Question 4

Transfer of pathogens from host to environment and then to another host are said to be transmitted _________.

Accepted Answer

The answer of Transfer of pathogens from host to environment...

Question 5

A neutralizing antibody against a toxin is called a(n) __________.

Accepted Answer

The answer of A neutralizing antibody against a toxin is...

Question 6

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 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.

Question 8

Vector-borne transmission can be either external or internal. In external (mechanical)  transmission, the pathogen is carried

Accepted Answer

A)   on a fomite.
B)   on the body surface of a vector.
C)   within the vector.
D)   all of the choices

Question 9

Adherence factors (adhesins)  that play a role in infectious diseases caused by gram negative bacteria include all of the following except

Accepted Answer

A)   glycocalyx.
B)   fimbriae.
C)   lipoteichoic acid.
D)   slime layer.

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

Question 11

Listeria monocytogenes propels itself through mammalian host cells using:

Accepted Answer

A)   a modified form of gliding motility.
B)   host cell actin and other cytoskeletal proteins.
C)   periplasmic flagella.
D)   fimbriae based twitching motility.

Question 12

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...

Question 13

Cholera toxin is an AB toxin.

Accepted Answer

A) True 
 B)False

Question 14

While exotoxin production is most generally associated with gram-positive bacteria, some Gram-negative bacteria also produce exotoxins.

Accepted Answer

A) True 
 B)False

Question 15

Pathogens can penetrate to deeper tissues by producing specific virulence structures or enzymes. These products include all of the following except

Accepted Answer

A)   collagenase.
B)   ribosomes.
C)   hyaluronidase.
D)   leukocidins.

Question 16

Which of the following has no effect on the outcome of the host-parasite relationship?

Accepted Answer

A)   the number of parasites on or in the host
B)   the virulence of the parasite
C)   the defenses of the host
D)   All of these have an effect on the outcome of the host-parasite relationship.

Question 17

Which of the following is not a biological effect associated with endotoxin?

Accepted Answer

A)   coagulation
B)   paralysis
C)   fever
D)   fibrinolysis

Question 18

A __________ is an organism that transfers pathogens from one host to another.

Accepted Answer

The answer of A __________ is an organism that transfers...

Question 19

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 20

Macrophages are phagocytic cells.

Accepted Answer

A) True 
 B)False

Exam 31: Infection and Pathogenicity

Which of the following is not a biological effect associated with endotoxin?

Correct AnswerverifiedShow Answer

Cholera toxin is an AB toxin.

Correct AnswerverifiedShow Answer

Pathogens can penetrate to deeper tissues by producing specific virulence structures or enzymes. These products include all of the following except

Correct AnswerverifiedShow Answer

While exotoxin production is most generally associated with gram-positive bacteria, some Gram-negative bacteria also produce exotoxins.

Correct AnswerverifiedShow Answer

Because LPS is bound to the surface of bacteria, it is called a(n) __________.

Correct AnswerverifiedShow Answer

Vector-borne transmission can be either external or internal. In external (mechanical) transmission, the pathogen is carried

Correct AnswerverifiedShow Answer

The presence of viruses in the blood is called _______________.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

A neutralizing antibody against a toxin is called a(n) __________.

Correct AnswerverifiedShow Answer

Macrophages are phagocytic cells.

Correct AnswerverifiedShow 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

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

Transfer of pathogens from host to environment and then to another host are said to be transmitted _________.

Correct AnswerverifiedShow Answer

Listeria monocytogenes propels itself through mammalian host cells using:

Correct AnswerverifiedShow Answer

Which of the following has no effect on the outcome of the host-parasite relationship?

Correct AnswerverifiedShow Answer

A __________ is an organism that transfers pathogens from one host to another.

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

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

Correct AnswerverifiedShow Answer

Adherence factors (adhesins) that play a role in infectious diseases caused by gram negative bacteria include all of the following except

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

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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
verified
pathogenic...
View Answer