Micro 1 Chp 17 Adaptive Immunity

Chemical signals sent between leukocytes are  

A. Colony-stimulating factor   
B. Interferons  
C. TCRs   
D. Interleukins
E. Tumor necrosis factor 

Which of the following recognizes antigens displayed on host cells with MHC II? 

A. Natural killer cell 
B. Basophil  
C. TC cell  
D. B cell
E. TH cell  

Plasma cells are activated by a(n)  

A. T cell 
B. APC  
C. B cell 
D. Antigen
E. Memory cell  

Newborns' immunity due to the transfer of antibodies across the placenta is an example of..

A. Artificially acquired passive immunity 
B. Naturally acquired passive immunity  
C. Innate immunity  
D. Artificially acquired active immunity  
E. Naturally acquired active immunity

CD4+ T cells are activated by...

A. Cytokines released by dendritic cells  
B. Complement  
C. Interaction between CD4+ and MHC II  
D. Cytokines released by B cells
E. Interaction between TCRs and MHC II  

The most abundant class of antibodies in serum is  

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

What type of immunity results from transfer of antibodies from one individual to a susceptible individual by means of injection?  

A. Innate immunity
B. Artificially acquired passive immunity  
C. Naturally acquired passive immunity 
D. Artificially acquired active immunity 
E. Naturally acquired active immunity  

Which of the following is NOT a characteristic of cellular immunity?  

A. It can inhibit the immune response  
B. Cells are processed in the thymus gland.  
C. T cells react with antigens  
D. B cells make antibodies.  
E. The cells originate in bone marrow.

Antigen-antibody binding may result in all of the following except...

A. IL-2 Production   
B. Neutralization of the antigen   
C. Opsonization of the antigen
D. Complement activation   
E. Agglutination of the antigens  

Which of the following statements about natural killer cells is false?  

A. They destroy tumor cells  
B. They destroy virus-infected cells  
C. They destroy cells lacking MHC I  
D. All of these statements are true
E. They are stimulated by an antigen 

Which statement is false?  

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

The specificity of an antibody is due to...

A. The variable portions of the H and L chains. 
B. The L chains  
C. The H chains.  
D. Its valence.  
E. The constant portions of the H and L chains

What type of immunity results from vaccination?  

A. Naturally acquired active immunity
B. Artificially acquired active immunity  
C. Naturally acquired passive immunity  
D. Artificially acquired passive immunity  
E. Innate immunity  

What type of immunity results from injection of tetanus toxoid?  

A. Artificially acquired passive immunity  
B. Naturally acquired active immunity
C. Innate immunity  
D. Naturally acquired passive immunity  
E. Artificially acquired active immunity  

In addition to IgG, the antibodies that can fix complement are...

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

Large antibodies that agglutinate antigens are ..

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

The best definition of antibody is...

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

Cytokines released by TH1 cells...

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

A Treg cell deficiency could result in...

A. Increased number of viral infections.  
B. Increased severity of bacterial infections  
C. Transplant rejection  
D. Autoimmunity
E. Increased number of bacterial infections 

What type of immunity is NOT due to antibodies? 

A. Artificially acquired active immunity  
B. Artificially acquired passive immunity
C. Naturally acquired active immunity 
D. Innate immunity 
E. Naturally acquired passive immunity  

Which of the following is NOT a characteristic of B cells?  

A. They are responsible for the memory response.  
B. They originate in bone marrow  
C. They are responsible for antibody formation.  
D. They have antibodies on their surfaces  
E. They recognize antigens associated with MHC I

Which of the following statements about IL-12 is false?  

A. It inhibits some tumor cells  
B. It activates macrophages.  
C. It causes TH cells to respond to HIV.  
D. It causes autoimmune diseases 
E. It activates the TH1 pathway.

The antibodies found in mucus, saliva, and tears are  

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

The following events occur in cellular immunity. What is the third step?  

A. TH cells proliferate 
B. Dendritic cell takes up antigen  
C. Antibodies are produced.  
D. TH cell produces cytokines  
E. Antigen enters M cell

Which of the following destroys virus-infected cells?  

A. Dendritic cells  
B. B cells  
C. TH  
D. Treg  
E. CTL

Cytokines released by TH1 cells...

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

The presence of which of the following indicates a current infection rather than a previous infection or vaccination?  

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

Patients with an inherited type of colon cancer called familial adenomatous polyposis have a mutation in the gene that codes for  

A. Phagocytosis  
B. IgE antibodies.
C. ADCC  
D. Apoptosis  
E. T helper cells.  

What type of immunity results from recovery from mumps?  

A. Innate immunity  
B. Artificially acquired passive immunity
C. Artificially acquired active immunity  
D. Naturally acquired active immunity 
E. Naturally acquired passive immunity  

The antibodies found on B cells are..

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

Which of the following recognizes antigens displayed on host cells with MHC II?  

A. Natural killer cell  
B. TH cell  
C. TC cell  
D. Basophil
E. B cell  

IL-2, produced by TH cells,

A. Activates macrophages  
B. Stimulates TH cell maturation
C. Causes phagocytosis   
D. Activates TC cells to CTLs.  
E. Activates antigen-presenting cells