Which one of the following is NOT an autoimmune disease:

Which one of the following is NOT an autoimmune disease:

A) AIDS
B) multiple sclerosis
C) Graves' disease
D) type I diabetes mellitus
E) rheumatoid arthritis




Answer: A

The relatively common autoimmune disease in which the thyroid gland produces excessive amounts of thyroxine is called:

The relatively common autoimmune disease in which the thyroid gland produces excessive amounts of thyroxine is called:

A) multiple sclerosis
B) Graves' disease
C) myasthenia gravis
D) glomerulonephritis
E) systemic lupus erythematosus

Answer: B

Allergic contact dermatitis following skin contact with poison ivy would normally lead to:

Allergic contact dermatitis following skin contact with poison ivy would normally lead to:

A) immediate hypersensitivity
B) acute hypersensitivity
C) delayed hypersensitivity
D) anaphylactic shock
E) immunodeficiency

Answer: C

With immediate hypersensitivity, the antibody class that binds to mast cells and basophils that trigger the release of histamine and other chemicals is:

With immediate hypersensitivity, the antibody class that binds to mast cells and basophils that trigger the release of histamine and other chemicals is:

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




Answer: E

Which one of the following is NOT a type of immunosuppressive therapy given after surgery to prevent rejection of a graft:

Which one of the following is NOT a type of immunosuppressive therapy given after surgery to prevent rejection of a graft:

A) corticosteroids
B) radiation
C) antiproliferative drugs
D) gamma globulin
E) immunosuppressive drugs

Answer: D

An isograft is a tissue graft donated by:

An isograft is a tissue graft donated by:

A) an unrelated person
B) a parent
C) a different animal species
D) the same person
E) an identical twin

Answer: E

Antigen presentation is essential for the activation and clonal selection of:

Antigen presentation is essential for the activation and clonal selection of:

A) T cells
B) B cells
C) plasma cell
D) antigen-presenting cells
E) antibodies




Answer: A

The process by which antibodies bind to specific sites on bacterial exotoxins (toxic chemicals secreted by bacteria) to block their harmful effects is called:

The process by which antibodies bind to specific sites on bacterial exotoxins (toxic chemicals secreted by bacteria) to block their harmful effects is called:

A) agglutination
B) chemotaxis
C) complement fixation
D) neutralization
E) precipitation

Answer: D

The specific antibody class that has the ability to cross the placental barrier and provide immunity to the fetus is:

The specific antibody class that has the ability to cross the placental barrier and provide immunity to the fetus is:

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




Answer: D

Which one of the following is NOT a method by which antibodies inactivate antigens:

Which one of the following is NOT a method by which antibodies inactivate antigens:

A) agglutination
B) chemotaxis
C) complement fixation
D) neutralization
E) precipitation

Answer: B

IgA:

IgA:

A) is mainly found in mucus and secretions such as tears and saliva
B) is passed from mother to fetus during pregnancy
C) is the most abundant antibody in blood plasma
D) can fix complement
E) is involved in allergies

Answer: A

Which one of the following is NOT one of the antibody classes:

Which one of the following is NOT one of the antibody classes:

A) IgA
B) IgB
C) IgD
D) IgG
E) IgE

Answer: B

Which one of the following is NOT true of the constant (C) regions of antibodies:

Which one of the following is NOT true of the constant (C) regions of antibodies:

A) they are the same or nearly the same
B) they form the "stem" of an antibody
C) they determine the specific type of antibody class formed
D) they form an antigen-binding site
E) they determine how an antibody class will carry out its immune role

Answer: D

Which one of the following is NOT true of basic antibody structure:

Which one of the following is NOT true of basic antibody structure:

A) they consist of four amino acid chains
B) they are linked together by disulfide bonds
C) the heavy chains are identical
D) the heavy chains are about 400 amino acids long
E) the light chains are often of differing lengths

Answer: E

Immune sera are used for all of the following EXCEPT:

Immune sera are used for all of the following EXCEPT:

A) tuberculosis
B) rabies
C) snake bites
D) botulism
E) tetanus

Answer: A

Vaccines are NOT for:

Vaccines are NOT for:

A) pneumonia
B) tetanus
C) measles
D) snake bites
E) polio

Answer: D

What specific type of acquired immunity do vaccines provide:

What specific type of acquired immunity do vaccines provide:

A) naturally acquired active immunity
B) naturally acquired passive immunity
C) artificially acquired active immunity
D) artificially acquired passive immunity
E) naturally acquired artificial immunity

Answer: C

The specific type of acquired immunity that a fetus obtains from maternal antibodies that cross the placenta is called:

The specific type of acquired immunity that a fetus obtains from maternal antibodies that cross the placenta is called:

A) naturally acquired active immunity
B) naturally acquired passive immunity
C) artificially acquired active immunity
D) artificially acquired passive immunity
E) artificially acquired natural immunity

Answer: B

B cells develop immunocompetence in the:

B cells develop immunocompetence in the:

A) thymus gland
B) bone marrow
C) spleen
D) thyroid gland
E) lymph nodes

Answer: B

Which one of the following is NOT true of macrophages:

Which one of the following is NOT true of macrophages:

A) they are considered the "big eaters" of the immune system
B) they engulf foreign particles
C) they circulate continuously throughout the body
D) they act as antigen presenters
E) they secrete monokines

Answer: C