Question 1

Fevers increase neutrophil activity and interferon production.

Accepted Answer

A) True 
 B)False

Question 2

The first successful vaccination with an attenuated virus was conducted by

Accepted Answer

A)  Jenner.
B)  Pasteur.
C)  Einstein.
D)  Newton.E) B) and C)
F) A) and B)

Question 3

________ tolerance involves complex processes involving lymphocytes outside the thymus and bone marrow.

Accepted Answer

A)  Central
B)  Deletion
C)  Peripheral
D)  AntigenE) B) and D)
F) B) and C)

Question 4

The success of vaccinations was first demonstrated by

Accepted Answer

A)  Jenner.
B)  Pasteur.
C)  Landsteiner.
D)  Kupffer.E) B) and C)
F) A) and D)

Question 5

Interferons have diverse functions including inhibiting erythrocytes and adipose cell maturation.

Accepted Answer

A) True 
 B)False

Question 6

Stress and aging may cause increased incidences of cancer.

Accepted Answer

A) True 
 B)False

Question 7

Alpha and beta interferons will inhibit

Accepted Answer

A)  growth of cancer cells.
B)  viral replication and assembly.
C)  activity of natural killer cells.
D)  All of the choices are correct.E) A) and B)
F) C) and D)

Question 8

Inhibition of the actions of cytotoxic T lymphocytes causes

Accepted Answer

A)  decreased antibody secretion.
B)  decreased stimulation of B lymphocytes.
C)  increased secretion of perforin.
D)  None of the choices are correct.E) B) and C)
F) A) and D)

Question 9

What is the process of drawing leukocytes to the site of an infection?

Accepted Answer

A)  chemotaxis
B)  diapedesis
C)  extravasation
D)  opsonizationE) A) and B)
F) A) and C)

Question 10

_____________ is a secreted enzyme that destroys bacteria.

Accepted Answer

A)  Chemotaxin
B)  Complement
C)  Lysozyme
D)  InterferonE) All of the above
F) B) and C)

Question 11

Which cell combats most bacterial infections?

Accepted Answer

A)  B lymphocyte
B)  T lymphocyteC) A) and B)
D) undefined

Question 12

__________ is a technique for artificially gaining active immunity through exposure to non-virulent pathogens or nonpathogenic antigens.

Accepted Answer

A)  Allergy
B)  Delayed-hypersensitivity
C)  Vaccination
D)  Auto-immunityE) A) and B)
F) None of the above

Question 13

_____________ tissues serve as a barrier to microbial infection.

Accepted Answer

A)  Epithelial
B)  Muscular
C)  Nervous
D)  ConnectiveE) C) and D)
F) None of the above

Question 14

What chemical is released by mast cells that aids in the inflammation process by causing vasodilation and increased vascular permeability?

Accepted Answer

A)  cytokines
B)  heparin
C)  histamine
D)  proteasesE) B) and D)
F) B) and C)

Question 15

Interactions between B cells and helper T cells stimulate the actions of killer T cells.

Accepted Answer

A) True 
 B)False

Question 16

Inhibiting proteins C2-C4 would block the activation of

Accepted Answer

A)  interferon.
B)  complement.
C)  specific immunity.
D)  antibodies.E) None of the above
F) A) and B)

Question 17

Viral infection of target cells results in

Accepted Answer

A)  the presentation of viral antigens in class-2 MHC molecules.
B)  the activation of cytotoxic T cells when the CD4 coreceptor is occupied.
C)  the presentation of viral antigens in class-1 MHC molecules.
D)  activation of helper T cells when the CD8 coreceptor is occupied.E) B) and C)
F) None of the above

Question 18

Interferons stimulate macrophage replication.

Accepted Answer

A) True 
 B)False

Question 19

What substance released by NK cells and cytotoxic T cells destroys the DNA of an infected cell?

Accepted Answer

A)  perforin
B)  interleukin-1
C)  interferon
D)  granzymeE) All of the above
F) A) and B)

Question 20

T lymphocytes

Accepted Answer

A)  differentiate in the bone marrow.
B)  secrete antibodies.
C)  mature in the thymus.
D)  All of the choices are correct.E) C) and D)
F) B) and C)

Exam 15: The Immune System

Alpha and beta interferons will inhibit

Correct AnswerverifiedShow Answer

Inhibiting proteins C2-C4 would block the activation of

Correct AnswerverifiedShow Answer

Stress and aging may cause increased incidences of cancer.

Correct AnswerverifiedShow Answer

Which cell combats most bacterial infections?

Correct AnswerverifiedShow Answer

What substance released by NK cells and cytotoxic T cells destroys the DNA of an infected cell?

Correct AnswerverifiedShow Answer

What chemical is released by mast cells that aids in the inflammation process by causing vasodilation and increased vascular permeability?

Correct AnswerverifiedShow Answer

Viral infection of target cells results in

Correct AnswerverifiedShow Answer

_____________ tissues serve as a barrier to microbial infection.

Correct AnswerverifiedShow Answer

Fevers increase neutrophil activity and interferon production.

Correct AnswerverifiedShow Answer

________ tolerance involves complex processes involving lymphocytes outside the thymus and bone marrow.

Correct AnswerverifiedShow Answer

Interactions between B cells and helper T cells stimulate the actions of killer T cells.

Correct AnswerverifiedShow Answer

Inhibition of the actions of cytotoxic T lymphocytes causes

Correct AnswerverifiedShow Answer

T lymphocytes

Correct AnswerverifiedShow Answer

Interferons stimulate macrophage replication.

Correct AnswerverifiedShow Answer

The success of vaccinations was first demonstrated by

Correct AnswerverifiedShow Answer

__________ is a technique for artificially gaining active immunity through exposure to non-virulent pathogens or nonpathogenic antigens.

Correct AnswerverifiedShow Answer

The first successful vaccination with an attenuated virus was conducted by

Correct AnswerverifiedShow Answer

_____________ is a secreted enzyme that destroys bacteria.

Correct AnswerverifiedShow Answer

What is the process of drawing leukocytes to the site of an infection?

Correct AnswerverifiedShow Answer

Interferons have diverse functions including inhibiting erythrocytes and adipose cell maturation.

Correct AnswerverifiedShow Answer

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