Question 1

Looking at the figure,which one of the following statements is false?

Accepted Answer

A)  Both diagrams involve recognition of antigens.
B)  Both diagrams involve lymphocytes.
C)  Both diagrams involve plasma membrane proteins.
D)  Diagram II shows cell-mediated immunity.
E)  Diagram I shows receptor proteins for a T cell.F) A) and E)
G) B) and E)

Question 2

Antibodies are

Accepted Answer

A)  circulating B receptors.
B)  circulating T receptors.
C)  circulating self-markers.
D)  circulating interferons.
E)  circulating cytokines.F) A) and D)
G) C) and E)

Question 3

Select the incorrectly matched immunoglobin (Ig) subclass and a fact about it.

Accepted Answer

A)  IgA-found in saliva and mother's milk
B)  IgD-serve as receptors on the surfaces of T cells
C)  IgE-promotes the release of histamine
D)  IgG-found in the plasma and secreted in a secondary response
E)  IgM-first secreted during primary responseF) A) and C)
G) A) and B)

Question 4

Complement proteins can perform all of the functions except

Accepted Answer

A)  amplify inflammatory response.
B)  attract phagocytes to the site of infection.
C)  coat invading microbes.
D)  insert themselves into the foreign cell's plasma membrane.
E)  activate interferons.F) A) and D)
G) C) and D)

Question 5

The immune response is initiated by

Accepted Answer

A)  suppressor T cells.
B)  cytotoxic T cells.
C)  mediator T cells.
D)  inducer T cells.
E)  helper T cells.F) C) and E)
G) B) and E)

Question 6

Select the incorrect statement regarding the temperature response of the immune system.

Accepted Answer

A)  When macrophages encounter invading cells,they release interleukin-1,which is carried to the brain by the circulatory system.
B)  Interleukin-1 is a pyrogen,which can cause the neurons in the hypothalamus to raise the body's temperature,producing a fever.
C)  Fever contributes to the body's defenses by stimulating phagocytosis.
D)  Fevers above 105 ∘\circ∘  F can be fatal.
E)  Fevers cause the liver and spleen to store sodium and potassium which bacteria need for their growth and metabolism. F) C) and D)
G) A) and B)

Question 7

The molecule that provokes a specific immune response is

Accepted Answer

A)  antigen.
B)  lymphocyte.
C)  antibody.
D)  lysozyme.E) C) and D)
F) B) and C)

Question 8

The antibodies that bind to antigens on a cell and cause the aggregation of complement proteins to ultimately burst the cell are

Accepted Answer

A)  IgG.
B)  IgA.
C)  IgD.
D)  IgM.
E)  IgE.F) A) and E)
G) B) and E)

Question 9

The immune system depends on the function of _________,which include several types of phagocytic cells and two kinds of lymphocytes.

Accepted Answer

A)  leukocytes
B)  erythrocytes
C)  platelets
D)  target cellsE) A) and B)
F) A) and C)

Question 10

The large,irregularly shaped cells that kill bacteria by digesting them are called

Accepted Answer

A)  monocytes.
B)  erythrocytes.
C)  macrophages.
D)  bacteriophages.
E)  antibodies.F) D) and E)
G) A) and E)

Question 11

Which of the following statements regarding hypersensitivity is false?

Accepted Answer

A)  The acceptance of self cells is known as immunological tolerance.
B)  Allergies are caused by IgG secretion in response to antigens.
C)  Autoreactive B cells produce autoantibodies causing inflammation.
D)  Itchy welts or hives could be called a local anaphylaxis.
E)  Delayed hypersensitivity is mediated by TH cells and macrophages.F) B) and D)
G) A) and B)

Question 12

Which of the following cells has an incorrect function?

Accepted Answer

A)  eosinophil-important to the elimination of parasites
B)  mast cell-releases histamine
C)  macrophage-phagocytic cell
D)  neutrophil-important antigen presenting cell
E)  monocyte-precursor of macrophageF) A) and B)
G) C) and D)

Question 13

Some viral pathogens evade detection by the vertebrate immune system by a mechanism that involves

Accepted Answer

A)  becoming a symbiont.
B)  becoming nonvirulent.
C)  frequent changing of surface antigens.
D)  becoming metabolically inactive.
E)  becoming a sporE.F) A) and E)
G) A) and D)

Question 14

Because of natural _______,a mature animal's immune system does not attack its own tissues.

Accepted Answer

A)  immunological tolerance
B)  homeostasis
C)  histochemicals
D)  differentiationE) A) and B)
F) A) and C)

Question 15

Nonphagocytic leukocytes are

Accepted Answer

A)  neutrophils.
B)  eosinophils.
C)  lymphocytes.
D)  basophils.
E)  monocytes.F) A) and D)
G) A) and C)

Question 16

Which of the following describes passive immunity?

Accepted Answer

A)  antibodies transferred to the fetus from the mother across the placenta
B)  vaccination for polio
C)  allowing oneself to become infected with chicken pox
D)  vaccination for influenza
E)  catching a common coldF) A) and E)
G) None of the above

Question 17

Allergy is a term used interchangeably with

Accepted Answer

A)  autoimmunity.
B)  antibodies.
C)  hypersensitivity.
D)  antigen shifting.
E)  asthma.F) A) and B)
G) B) and E)

Question 18

The surface of most vertebrate cells possesses self-markers called major __________.

Accepted Answer

A)  histocompatibility complex proteins
B)  T-cell receptors
C)  antigens
D)  immunoglobulinsE) All of the above
F) A) and B)

Question 19

Select the incorrectly matched cell type and its function.

Accepted Answer

A)  helper T cell-commander of the immune system
B)  inducer T cell-mediates the maturation of other T cells in the thyroid gland
C)  cytotoxic T cell-detects and destroys infected body cells
D)  suppressor T cells-dampens the activities of T cells and B cells after the infection has been arrested
E)  monocyte-precursor of macrophageF) C) and D)
G) A) and C)

Question 20

Virus-infected cells secrete a class of proteins called ________ that play a key role in body defense.

Accepted Answer

A)  interferon
B)  cytokines
C)  antigens
D)  interleukin-4E) B) and C)
F) A) and B)

Exam 52: The Immune System

Select the incorrectly matched immunoglobin (Ig) subclass and a fact about it.

Correct AnswerverifiedShow Answer

Allergy is a term used interchangeably with

Correct AnswerverifiedShow Answer

Select the incorrect statement regarding the temperature response of the immune system.

Correct AnswerverifiedShow Answer

The immune system depends on the function of _________,which include several types of phagocytic cells and two kinds of lymphocytes.

Correct AnswerverifiedShow Answer

The large,irregularly shaped cells that kill bacteria by digesting them are called

Correct AnswerverifiedShow Answer

Nonphagocytic leukocytes are

Correct AnswerverifiedShow Answer

The molecule that provokes a specific immune response is

Correct AnswerverifiedShow Answer

Antibodies are

Correct AnswerverifiedShow Answer

Looking at the figure,which one of the following statements is false?

Correct AnswerverifiedShow Answer

The surface of most vertebrate cells possesses self-markers called major __________.

Correct AnswerverifiedShow Answer

Virus-infected cells secrete a class of proteins called ________ that play a key role in body defense.

Correct AnswerverifiedShow Answer

The immune response is initiated by

Correct AnswerverifiedShow Answer

The antibodies that bind to antigens on a cell and cause the aggregation of complement proteins to ultimately burst the cell are

Correct AnswerverifiedShow Answer

Some viral pathogens evade detection by the vertebrate immune system by a mechanism that involves

Correct AnswerverifiedShow Answer

Complement proteins can perform all of the functions except

Correct AnswerverifiedShow Answer

Which of the following cells has an incorrect function?

Correct AnswerverifiedShow Answer

Which of the following statements regarding hypersensitivity is false?

Correct AnswerverifiedShow Answer

Because of natural _______,a mature animal's immune system does not attack its own tissues.

Correct AnswerverifiedShow Answer

Which of the following describes passive immunity?

Correct AnswerverifiedShow Answer

Select the incorrectly matched cell type and its function.

Correct AnswerverifiedShow Answer

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