Question 1

What molecule is used to produce lymphokine-activated killer cells to treat some types of cancer?

Accepted Answer

A)  interleukin-2
B)  interleukin-1
C)  interleukin-4
D)  G-CSF

Question 2

Which cell combats most bacterial infections?

Accepted Answer

A)  B lymphocyte
B)  T lymphocyte

Question 3

How does the immune system recognize a foreign cell?

Accepted Answer

A)  The presence of toll-like receptors.
B)  The presence of organ-specific phagocytes.
C)  The presence of pathogen-associated molecular patterns.
D)  The presence of complement.

Question 4

Antibodies act as "red flags" to identify antigens or pathogenic organisms for phagocytosis or action by complement.

Accepted Answer

A) True 
 B)False

Question 5

The success of vaccinations was first demonstrated by

Accepted Answer

A)  Jenner.
B)  Pasteur.
C)  Landsteiner.
D)  Kupffer.

Question 6

Mutation in the variable regions of the heavy and light chains would directly change the antigen binding site.

Accepted Answer

A) True 
 B)False

Question 7

Phagocytotic leukocytes involved in the inflammatory response generally do not reenter system circulation.

Accepted Answer

A) True 
 B)False

Question 8

Mutations in polypeptides called _____________ that are produced by T cells would prevent T cells from destroying infected cells.

Accepted Answer

A)  perforins
B)  antibodies
C)  histamines
D)  interferons

Question 9

The binding of FAS and its FAS ligand will trigger

Accepted Answer

A)  interferon release.
B)  T lymphocyte activation.
C)  antibody production.
D)  T lymphocyte apoptosis.

Question 10

What is the function of granzymes?

Accepted Answer

A)  polymerize cell membranes to form a large pore
B)  activate caspases that destroy the cell's DNA
C)  bind to the plasma membrane of the host cell
D)  activate complement

Question 11

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.

Question 12

Helper T lymphocytes interact specifically with antigens presented with class-2 MHC molecules.

Accepted Answer

A) True 
 B)False

Question 13

T cells have receptors for antigens and will bind to free antigens like B cells.

Accepted Answer

A) True 
 B)False

Question 14

Interferons

Accepted Answer

A)  stimulate viral replication.
B)  provide humoral immunity.
C)  provide nonspecific immunity.
D)  are produced by viruses.

Question 15

Inhibiting the actions of helper T lymphocytes may impair humoral immunity.

Accepted Answer

A) True 
 B)False

Question 16

Tissue transplants should have matching ______ to prevent rejection in the host.

Accepted Answer

A)  MHC molecules
B)  perforins
C)  interleukins
D)  All of the choices are correct.

Question 17

The two categories of immune defensive mechanisms are __________ and ___________.

Accepted Answer

A)  innate (nonspecific) immunity,adaptive (specific) immunity.
B)  passive immunity,active immunity.
C)  heavy immunity,light immunity.
D)  direct immunity,indirect immunity.

Exam 15: The Immune System

Inhibiting the actions of helper T lymphocytes may impair humoral immunity.

Correct Answer
verified

Interferons

Correct Answer
verified

Mutation in the variable regions of the heavy and light chains would directly change the antigen binding site.

Correct Answer
verified

Viral infection of target cells results in

Correct Answer
verified

The two categories of immune defensive mechanisms are and _.

Correct Answer
verified

T cells have receptors for antigens and will bind to free antigens like B cells.

Correct Answer
verified

The success of vaccinations was first demonstrated by

Correct Answer
verified

Helper T lymphocytes interact specifically with antigens presented with class-2 MHC molecules.

Correct Answer
verified

Which cell combats most bacterial infections?

Correct Answer
verified

What is the function of granzymes?

Correct Answer
verified

Antibodies act as "red flags" to identify antigens or pathogenic organisms for phagocytosis or action by complement.

Correct Answer
verified

How does the immune system recognize a foreign cell?

Correct Answer
verified

Tissue transplants should have matching ______ to prevent rejection in the host.

Correct Answer
verified

Mutations in polypeptides called _____________ that are produced by T cells would prevent T cells from destroying infected cells.

Correct Answer
verified

Phagocytotic leukocytes involved in the inflammatory response generally do not reenter system circulation.

Correct Answer
verified

What molecule is used to produce lymphokine-activated killer cells to treat some types of cancer?

Correct Answer
verified

The binding of FAS and its FAS ligand will trigger

Correct Answer
verified

Exam 15: The Immune System

Inhibiting the actions of helper T lymphocytes may impair humoral immunity.

Correct AnswerverifiedShow Answer

Interferons

Correct AnswerverifiedShow Answer

Mutation in the variable regions of the heavy and light chains would directly change the antigen binding site.

Correct AnswerverifiedShow Answer

Viral infection of target cells results in

Correct AnswerverifiedShow Answer

The two categories of immune defensive mechanisms are __________ and ___________.

Correct AnswerverifiedShow Answer

T cells have receptors for antigens and will bind to free antigens like B cells.

Correct AnswerverifiedShow Answer

The success of vaccinations was first demonstrated by

Correct AnswerverifiedShow Answer

Helper T lymphocytes interact specifically with antigens presented with class-2 MHC molecules.

Correct AnswerverifiedShow Answer

Which cell combats most bacterial infections?

Correct AnswerverifiedShow Answer

What is the function of granzymes?

Correct AnswerverifiedShow Answer

Antibodies act as "red flags" to identify antigens or pathogenic organisms for phagocytosis or action by complement.

Correct AnswerverifiedShow Answer

How does the immune system recognize a foreign cell?

Correct AnswerverifiedShow Answer

Tissue transplants should have matching ______ to prevent rejection in the host.

Correct AnswerverifiedShow Answer

Mutations in polypeptides called _____________ that are produced by T cells would prevent T cells from destroying infected cells.

Correct AnswerverifiedShow Answer

Phagocytotic leukocytes involved in the inflammatory response generally do not reenter system circulation.

Correct AnswerverifiedShow Answer

What molecule is used to produce lymphokine-activated killer cells to treat some types of cancer?

Correct AnswerverifiedShow Answer

The binding of FAS and its FAS ligand will trigger

Correct AnswerverifiedShow Answer

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The two categories of immune defensive mechanisms are and _.

Correct Answer
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