Question 1

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

Accepted Answer

A) When macrophages encounter invading cells,they release immunoglobulin-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 hyperhidrosis and causing the liver and spleen to store magnesium. 
D) Fevers above 99° F are often fatal. 
A) When macrophages encounter invading cells,they release immunoglobulin-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 hyperhidrosis and causing the liver and spleen to store magnesium. 
D) Fevers above 99° F are often fatal.

Question 2

The human immunodeficiency virus mounts a direct attack on TH cells by recognizing the ________ surface proteins associated with these cells.

Accepted Answer

A) Fc 
B) CD4 
C) epitope 
D) cytokine 
A) Fc 
B) CD4 
C) epitope 
D) cytokine

Question 3

Which of the following statements regarding hypersensitivity are true? (Check all that apply.)

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 4

What is the term for immunity gained by the transfer of antibodies across the placental barrier?

Accepted Answer

A) passive immunity 
B) acquired immunity 
C) humoral immunity 
D) cell-mediated immunity 
E) auto immunity 
A) passive immunity 
B) acquired immunity 
C) humoral immunity 
D) cell-mediated immunity 
E) auto immunity

Question 5

In the humoral response,some B cells differentiate into plasma cells.What do plasma cells produce in large quantities?

Accepted Answer

A) agglutinations that are specific for foreign antibodies 
B) interferons specific for foreign antigens 
C) immunoglobulins specific for foreign antigens 
D) antigens specific for foreign antibodies 
E) macrophages specific for foreign antibodies 
A) agglutinations that are specific for foreign antibodies 
B) interferons specific for foreign antigens 
C) immunoglobulins specific for foreign antigens 
D) antigens specific for foreign antibodies 
E) macrophages specific for foreign antibodies

Question 6

What is another term for allergy?

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 7

When a person is tested for HIV,the test is considered positive if ________ to the HIV are present.

Accepted Answer

A) bacteria 
B) antigens 
C) antibodies 
D) T-cells 
E) natural killer cells 
A) bacteria 
B) antigens 
C) antibodies 
D) T-cells 
E) natural killer cells

Question 8

What category of cells includes both phagocytes and lymphocytes?

Accepted Answer

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

Question 9

What do we call a lymphocyte that has never encountered an antigen?

Accepted Answer

A) T cell 
B) B cell 
C) foreign lymphocyte 
D) stem leukocyte 
E) naïve lymphocyte 
A) T cell 
B) B cell 
C) foreign lymphocyte 
D) stem leukocyte 
E) naïve lymphocyte

Question 10

What cells are phagocytes that can also present antigens to TH cells?

Accepted Answer

A) B cells 
B) macrophages 
C) plasma cells 
D) T cells 
E) monocytes 
A) B cells 
B) macrophages 
C) plasma cells 
D) T cells 
E) monocytes

Question 11

What initiates the immune response?

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 12

During a blood transfusion,what can occur when the antigens on the blood cells of a blood donor interact with the antibodies that are present in the plasma of a recipient that has a different blood type?

Accepted Answer

A) an autoimmune reaction 
B) an infection 
C) an agglutination reaction 
D) an inflammatory reaction 
E) a temperature response 
A) an autoimmune reaction 
B) an infection 
C) an agglutination reaction 
D) an inflammatory reaction 
E) a temperature response

Question 13

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

Question 14

With what do cytotoxic cells interact?

Accepted Answer

A) MHC-I proteins 
B) MHC-II proteins 
C) foreign antigen 
D) MHC-I and MHC-II proteins 
E) MHC-I proteins and foreign antigens 
A) MHC-I proteins 
B) MHC-II proteins 
C) foreign antigen 
D) MHC-I and MHC-II proteins 
E) MHC-I proteins and foreign antigens

Question 15

What is a necessary component of a powerful immune system?

Accepted Answer

A) immunological tolerance 
B) strict temperature homeostasis 
C) thousands of different Ig genes 
D) a large thymus gland 
A) immunological tolerance 
B) strict temperature homeostasis 
C) thousands of different Ig genes 
D) a large thymus gland

Question 16

Which of the following cells is matched to 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 17

Which of the following are organs of the immune system? (Check all that apply.)

Accepted Answer

A) red bone marrow 
B) spleen 
C) thymus 
D) thyroid 
E) tonsils 
A) red bone marrow 
B) spleen 
C) thymus 
D) thyroid 
E) tonsils

Question 18

Which of the following regarding antigens is true?

Accepted Answer

A) A large antigen is likely to have many different epitopes,each of which can stimulate a distinct immune response. 
B) An antigen is a molecule which promotes a general immune response. 
C) Bacteria do not contain antigens. 
D) Antigens can only be recognized by their lipid moieties. 
E) The most effective antigens are small simple amino acid complexes. 
A) A large antigen is likely to have many different epitopes,each of which can stimulate a distinct immune response. 
B) An antigen is a molecule which promotes a general immune response. 
C) Bacteria do not contain antigens. 
D) Antigens can only be recognized by their lipid moieties. 
E) The most effective antigens are small simple amino acid complexes.

Question 19

What are on the surface of most vertebrate cells,acting as markers of "self"?

Accepted Answer

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

Question 20

When a "new" antigen first challenges the immune system,if the primary immune response produces B cells,what are the fates of those B cells?
 I-Some of the B cells become plasma cells that secrete antibodies.
II-Some of the B cells become memory cells and can produce a swifter response if the body encounters that particular antigen again.
III-Some of the B cells secrete chemicals called pyrogens that travel to the brain inducing a fever.

Accepted Answer

A) just II 
B) just I 
C) II and III 
D) I and II 
E) I,II,and III 
A) just II 
B) just I 
C) II and III 
D) I and II 
E) I,II,and III

Exam 50: The Immune System

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

The human immunodeficiency virus mounts a direct attack on TH cells by recognizing the ________ surface proteins associated with these cells.

Which of the following statements regarding hypersensitivity are true? (Check all that apply.)

What is the term for immunity gained by the transfer of antibodies across the placental barrier?

In the humoral response,some B cells differentiate into plasma cells.What do plasma cells produce in large quantities?

What is another term for allergy?

When a person is tested for HIV,the test is considered positive if ________ to the HIV are present.

What category of cells includes both phagocytes and lymphocytes?

What do we call a lymphocyte that has never encountered an antigen?

What cells are phagocytes that can also present antigens to TH cells?

What initiates the immune response?

During a blood transfusion,what can occur when the antigens on the blood cells of a blood donor interact with the antibodies that are present in the plasma of a recipient that has a different blood type?

Which of the following describes passive immunity?

With what do cytotoxic cells interact?

What is a necessary component of a powerful immune system?

Which of the following cells is matched to an incorrect function?

Which of the following are organs of the immune system? (Check all that apply.)

Which of the following regarding antigens is true?

What are on the surface of most vertebrate cells,acting as markers of "self"?

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The human immunodeficiency virus mounts a direct attack on T_H cells by recognizing the ________ surface proteins associated with these cells.

What cells are phagocytes that can also present antigens to T_H cells?