Question 1

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

Accepted Answer

A) histocompatibility complex proteins 
B) T-cell receptors 
C) antigens 
D) immunoglobulins 
A) histocompatibility complex proteins 
B) T-cell receptors 
C) antigens 
D) immunoglobulins

Question 2

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

Question 3

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) differentiation 
A) immunological tolerance 
B) homeostasis 
C) histochemicals 
D) differentiation

Question 4

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

Question 5

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. 
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.

Question 6

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-4 
A) interferon 
B) cytokines 
C) antigens 
D) interleukin-4

Question 7

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

Question 8

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. 
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.

Question 9

Antibodies are

Accepted Answer

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

Question 10

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. 
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.

Question 11

Allergy is a term used interchangeably with

Accepted Answer

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

Question 12

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 response 
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 response

Question 13

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 macrophage 
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 macrophage

Question 14

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

Question 15

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 macrophage 
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 macrophage

Question 16

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 cells 
A) leukocytes 
B) erythrocytes 
C) platelets 
D) target cells

Question 17

Nonphagocytic leukocytes are

Accepted Answer

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

Question 18

The molecule that provokes a specific immune response is

Accepted Answer

A) antigen. 
B) lymphocyte. 
C) antibody. 
D) lysozyme. 
A) antigen. 
B) lymphocyte. 
C) antibody. 
D) lysozyme.

Question 19

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. 
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.

Question 20

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 cold 
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 cold

Exam 52: The Immune System

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

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

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

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

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

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

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

Complement proteins can perform all of the functions except

Antibodies are

Which of the following statements regarding hypersensitivity is false?

Allergy is a term used interchangeably with

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

Select the incorrectly matched cell type and its function.

The immune response is initiated by

Which of the following cells has an incorrect function?

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

Nonphagocytic leukocytes are

The molecule that provokes a specific immune response is

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

Which of the following describes passive immunity?

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