chapter 17 micro

What type of immunity results from vaccination?
A) Innate immunity
B) Naturally acquired active immunity
C) Naturally acquired passive immunity
D) Artificially acquired active immunity
E) Artificially acquired passive immunity

What type of immunity results from transfer of antibodies from one individual to a susceptible individual by
means of injection?
A) Innate immunity
B) Naturally acquired active immunity
C) Naturally acquired passive immunity
D) Artificially acquired active immunity
E) Artificially acquired passive immunity

What type of immunity results from recovery from mumps?
A) Innate immunity
B) Naturally acquired active immunity
C) Naturally acquired passive immunity
D) Artificially acquired active immunity
E) Artificially acquired passive immunity

A human's resistance to canine distemper is an example of
A) Innate immunity.
B) Naturally acquired active immunity.
C) Naturally acquired passive immunity.
D) Artificially acquired active immunity.
E) Artificially acquired passive immunity.

Newborns' immunity due to the transfer of antibodies across the placenta is an example of
A) Innate immunity.
B) Naturally acquired active immunity.
C) Naturally acquired passive immunity.
D) Artificially acquired active immunity.
E) Artificially acquired passive immunity.

What type of immunity is NOT  due to antibodies?
A) Innate immunity
B) Naturally acquired active immunity
C) Naturally acquired passive immunity
D) Artificially acquired active immunity
E) Artificially acquired passive immunity

What type of immunity results from injection of tetanus toxoid?
A) Innate immunity
B) Naturally acquired active immunity
C) Naturally acquired passive immunity
D) Artificially acquired active immunity
E) Artificially acquired passive immunity

Immunity due to injection of an antigen is an example of
A) Innate immunity.
B) Naturally acquired active immunity.
C) Naturally acquired passive immunity.
D) Artificially acquired active immunity.
E) Artificially acquired passive immunity.

CD4+  T cells are activated by
A) Interaction between CD4+  and MHC II.
B) Interaction between TCRs and MHC II.
C) Cytokines released by dendtritic cells.
D) Cytokines released by B cells.
E) Complement.

Which of the following recognizes antigens displayed on host cells with MHC II?
A) TC cell
B) B cell
C) TH cell
D) Natural killer cell
E) Basophil

The specificity of an antibody is due to
A) Its valence.
B) The H chains.
C) The L chains.
D) The constant portions of the H and L chains.
E) The variable portions of the H and L chains

Which of the following is NOT  a characteristic of B cells?
A) They originate in bone marrow.
B) They have antibodies on their surfaces.
C) They are responsible for the memory response.
D) They are responsible for antibody formation.
E) They recognize antigens associated with MHC I.

Which of the following is NOT  a characteristic of cellular immunity?
A) The cells originate in bone marrow.
B) Cells are processed in the thymus gland.
C) It can inhibit the immune response.
D) B cells make antibodies.
E) T cells react with antigens.

Plasma cells are activated by a(n)
A) Antigen.
B) T cell.
C) B cell.
D) Memory cell.
E) APC.

The antibodies found in mucus, saliva, and tears are
A) IgG.
B) IgM.
C) IgA.
D) IgD.
E) IgE.

The antibodies found on B cells are
A) IgG.
B) IgM.
C) IgA.
D) IgD.
E) IgE.

The antibodies that can bind to large parasites are
A) IgG.
B) IgM.
C) IgA.
D) IgD.
E) IgE.

In addition to IgG, the antibodies that can fix complement are
A) IgG.
B) IgM.
C) IgA.
D) IgD.
E) IgE.

Large antibodies that agglutinate antigens are
A) IgG.
B) IgM.
C) IgA.
D) IgD.
E) IgE.

The most abundant class of antibodies in serum is
A) IgG.
B) IgM.
C) IgA.
D) IgD.
E) IgE.

 In Figure 17.1, which letter on the graph indicates the patient's secondary response to an antigen?
A) a
B) b
C) c
D) d
E) e

 In Figure 17.1, which letter on the graph indicates the patient's response to a second antigen?
A) a
B) b
C) c
D) d
E) e

 In Figure 17.1, the arrow at time (d) indicates
A) The time of exposure to the same antigen as at time (a).
B) The secondary response.
C) The primary response.
D) Exposure to a new antigen.
E) The T- cell response.

Which statement is false?
A) The variable region of a heavy chain binds with antigen.
B) The variable region of a light chain binds with antigen.
C) The Fc region attaches to a host cell.
D) The constant region of a heavy chain is the same for all antibodies.
E) All of the above statements are true.

The best definition of antigen  is
A) Something foreign in the body.
B) A chemical that elicits an antibody response and can combine with these antibodies.
C) A chemical that combines with antibodies.
D) A pathogen.
E) A protein that combines with antibodies

The best definition antibody  is
A) A serum protein.
B) A protein that inactivates or kills an antigen.
C) A protein made in response to an antigen that can combine with that antigen.
D) An immunoglobulin.
E) A protein that combines with a protein or carbohydrate.

The following events elicit an antibody response. What is the third step?
A) Antigen- digest goes to surface of APC.
B) APC phagocytizes antigen.
C) B cell is activated.
D) TH  cell recognizes antigen- digest and MHC II.
E) TH  cell produces cytokines.

 In Figure 17.2, which areas are similar for all IgG antibodies?
A) a and b
B) a and c
C) b and c
D) c and d
E) b and d

 In Figure 17.2, which areas are different for all IgM antibodies?
A) a and b
B) a and c
C) b and c
D) c and d

 In Figure 17.2, which areas represent antigen- binding sites?
A) a and b
B) a and c
C) b and c
D) c and d
E) b and d

 In Figure 17.2, what can attach to a host cell?
A) a and c
B) b and c
C) b
D) d
E) e

 Figure 17.2 could be any of the following EXCEPT
 A) IgM.
B) IgG.
C) IgD.
D) IgE.
E) The figure could represent any of the above.

The presence of which of the following indicates a current infection rather than a previous infection or
vaccination?
A) IgA
B) IgG
C) IgM
D) IgD
E) IgE

Which of the following destroys virus- infected cells?
A) CTL
B) Treg
 C) TH
 D) Dendritic cells
E) B cells

The following events occur in cellular immunity. What is the third step?
A) Antibodies are produced.
B) Dendritic cell takes up antigen.
C) Antigen enters M cell
D) TH cell produces cytokines.
E) TH cells proliferate.

Cytokines released by TH1 cells
A) Activate CD8+  cells to CTLs.
B) Convert TH1 cells to TH2 cells.
C) Convert TH2 cells to TH1 cells.
D) Kill parasites.
E) Convert B cells to T cells.

Which one of the following causes transmembrane channels in target cells?
A) Antigen
B) Hapten
C) IL- 1
D) IL- 2
E) Perforin

Patients with an inherited type of colon cancer called familial adenomatous polyposis have a mutation in the
gene that codes for
A) Apoptosis.
B) IgE antibodies.
C) T helper cells.
D) ADCC.
E) Phagocytosis.

Thymic selection
A) Destroys T cells that don’t recognize self- molecules of MHC.
B) Destroys B cells that make antibodies against self.
C) Destroys MHC molecules.
D) Destroys CD4+  cells that attack self.
E) Activates B cells.

Which of the following statements about natural killer cells is false?
A) They destroy virus- infected cells.
B) They destroy tumor cells.
C) They destroy cells lacking MHC I.
D) They are stimulated by an antigen.
E) All of the above statements are true.

An antibody's Fc region can be bound by
A) Antibodies.
B) Macrophages.
C) T helper cells.
D) B cells.
E) CTLs

A Treg cell deficiency could result in
A) Increased number of viral infections.
B) Increased number of bacterial infections.
C) Autoimmunity.
D) Increased severity of bacterial infections.
E) Transplant rejection.

Cell death caused by perforin and granzymes is caused by
A) CTLs.
B) TH1 cells.
C) TH2 cells.
D) B cells.
E) TLRs.

IL- 2, produced by TH  cells,
A) Activates macrophages.
B) Stimulates TH cell maturation.
C) Causes phagocytosis.
D) Activates antigen- presenting cells.
E) Activates TC cells to CTLs.

Which of the following statements about IL- 12 is false?
A) It activates macrophages.
B) It inhibits some tumor cells.
C) It activates the TH1 pathway.
D) It causes autoimmune diseases.
E) It causes TH cells to respond to HIV.