Question 1

Which of the following statements is TRUE regarding a patient who is HIV positive?

Accepted Answer

A)  No medication is required until the CD4 cell count drops below normal range. 
B)  Antibodies are present, destroying the virus and preventing transmission to others. 
C)  Antibodies in the blood indicate presence of virus and possible transmission to others. 
D)  Enzymes have not yet converted RNA to DNA for replication. 
A)  No medication is required until the CD4 cell count drops below normal range. 
B)  Antibodies are present, destroying the virus and preventing transmission to others. 
C)  Antibodies in the blood indicate presence of virus and possible transmission to others. 
D)  Enzymes have not yet converted RNA to DNA for replication.

Question 2

An autoimmune disease is:

Accepted Answer

A)  excessive formation of antibodies following exposure to foreign material. 
B)  an extreme response to normally harmless material in the environment. 
C)  an abnormal response to ingested food and drugs. 
D)  failure of the immune system to distinguish self from nonself. 
A)  excessive formation of antibodies following exposure to foreign material. 
B)  an extreme response to normally harmless material in the environment. 
C)  an abnormal response to ingested food and drugs. 
D)  failure of the immune system to distinguish self from nonself.

Question 3

Humoral immunity is mediated by:

Accepted Answer

A)  natural killer cells. 
B)  T lymphocytes (T cells). 
C)  B lymphocytes (B cells). 
D)  neutrophils. 
A)  natural killer cells. 
B)  T lymphocytes (T cells). 
C)  B lymphocytes (B cells). 
D)  neutrophils.

Question 4

Which of the following statements applies to the complement system?

Accepted Answer

A)  It is activated by IgE. 
B)  It blocks the inflammatory response. 
C)  It consists of proteins in the blood that must be activated. 
D)  It may destroy antibodies in the circulation. 
A)  It is activated by IgE. 
B)  It blocks the inflammatory response. 
C)  It consists of proteins in the blood that must be activated. 
D)  It may destroy antibodies in the circulation.

Question 5

HIV infection impairs:

Accepted Answer

A)  humoral immunity. 
B)  cell-mediated immunity. 
C)  both humoral and cell-mediated immunity. 
D)  neither type of immunity. 
A)  humoral immunity. 
B)  cell-mediated immunity. 
C)  both humoral and cell-mediated immunity. 
D)  neither type of immunity.

Question 6

Distinguishing clinical features of systemic lupus erythematosus include:

Accepted Answer

A)  inflammation in multiple organs. 
B)  lack of a specific diagnostic blood test. 
C)  acute onset and nonprogressive course. 
D)  typical skin rash on the chest and back. 
A)  inflammation in multiple organs. 
B)  lack of a specific diagnostic blood test. 
C)  acute onset and nonprogressive course. 
D)  typical skin rash on the chest and back.

Question 7

When an allergen binds with IgE antibodies on mast cells, resulting in release of chemical mediators, this reaction is called:

Accepted Answer

A)  cytotoxic hypersensitivity. 
B)  immune complex hypersensitivity. 
C)  type I hypersensitivity. 
D)  type IV hypersensitivity. 
A)  cytotoxic hypersensitivity. 
B)  immune complex hypersensitivity. 
C)  type I hypersensitivity. 
D)  type IV hypersensitivity.

Question 8

Which of the following characteristics apply to HIV?
1) It contains two strands of DNA.
2) It tends to mutate frequently to form new strains.
3) The incubation period is extremely short.
4) It is inactivated by heat and many disinfectants.

Accepted Answer

A)  1, 2 
B)  1, 3 
C)  2, 4 
D)  3, 4 
A)  1, 2 
B)  1, 3 
C)  2, 4 
D)  3, 4

Question 9

Incompatible blood transfusions result in:

Accepted Answer

A)  hemolysis of erythrocytes. 
B)  a type I immune response. 
C)  deposits in multiple organs. 
D)  immune deficiency. 
A)  hemolysis of erythrocytes. 
B)  a type I immune response. 
C)  deposits in multiple organs. 
D)  immune deficiency.

Question 10

Systemic lupus erythematosus is caused by:

Accepted Answer

A)  a chronic allergic condition. 
B)  development of an immune-deficient state. 
C)  a deficiency of T lymphocytes. 
D)  immune complex deposits of antinuclear antibodies. 
A)  a chronic allergic condition. 
B)  development of an immune-deficient state. 
C)  a deficiency of T lymphocytes. 
D)  immune complex deposits of antinuclear antibodies.

Question 11

Which of the following causes anaphylaxis?

Accepted Answer

A)  A severe, systemic allergic reaction 
B)  Type III hypersensitivity 
C)  Cell-mediated hypersensitivity 
D)  Immune complex deposits in many tissues 
A)  A severe, systemic allergic reaction 
B)  Type III hypersensitivity 
C)  Cell-mediated hypersensitivity 
D)  Immune complex deposits in many tissues

Question 12

Which of the following are the target cells for HIV?

Accepted Answer

A)  Helper T lymphocytes (CD4 lymphocytes) 
B)  B lymphocytes 
C)  Natural killer cells 
D)  Macrophages 
A)  Helper T lymphocytes (CD4 lymphocytes) 
B)  B lymphocytes 
C)  Natural killer cells 
D)  Macrophages

Question 13

Tissue transferred between two genetically identical twins is referred to as a/an:

Accepted Answer

A)  allograft. 
B)  syngraft. 
C)  isograft. 
D)  autograft. 
A)  allograft. 
B)  syngraft. 
C)  isograft. 
D)  autograft.

Question 14

Serious infections frequently occurring in patients with AIDS include:
1) tuberculosis.
2) Pneumocystis carinii pneumonia.
3) influenza.
4) tetanus.

Accepted Answer

A)  1, 2 
B)  1, 4 
C)  2, 3 
D)  3, 4 
A)  1, 2 
B)  1, 4 
C)  2, 3 
D)  3, 4

Question 15

CD4-positive helper T cells function by:

Accepted Answer

A)  direct cytotoxic action. 
B)  facilitating all immune system activity. 
C)  producing immunoglobulins. 
D)  inactivating allergens. 
A)  direct cytotoxic action. 
B)  facilitating all immune system activity. 
C)  producing immunoglobulins. 
D)  inactivating allergens.

Exam 7: Immunity

Which of the following statements is TRUE regarding a patient who is HIV positive?

An autoimmune disease is:

Humoral immunity is mediated by:

Which of the following statements applies to the complement system?

HIV infection impairs:

Distinguishing clinical features of systemic lupus erythematosus include:

When an allergen binds with IgE antibodies on mast cells, resulting in release of chemical mediators, this reaction is called:

Which of the following characteristics apply to HIV? 1) It contains two strands of DNA. 2) It tends to mutate frequently to form new strains. 3) The incubation period is extremely short. 4) It is inactivated by heat and many disinfectants.

Incompatible blood transfusions result in:

Systemic lupus erythematosus is caused by:

Which of the following causes anaphylaxis?

Which of the following are the target cells for HIV?

Tissue transferred between two genetically identical twins is referred to as a/an:

Serious infections frequently occurring in patients with AIDS include: 1) tuberculosis. 2) Pneumocystis carinii pneumonia. 3) influenza. 4) tetanus.

CD4-positive helper T cells function by:

Introduction to Pathophysiology

Fluid, Electrolyte, and Acid-Base Imbalances

Introduction to Basic Pharmacology and Other Common Therapies

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