Micro 1 Chp 17 Adaptive Immunity

Chemical signals sent between leukocytes are  

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

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

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

Plasma cells are activated by a(n)  

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

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

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

CD4+ T cells are activated by...

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

The most abundant class of antibodies in serum is  

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

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

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

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

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

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

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

Which statement is false?  

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

The specificity of an antibody is due to...

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

What type of immunity results from vaccination?  

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

What type of immunity results from injection of tetanus toxoid?  

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

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

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

Large antibodies that agglutinate antigens are ..

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

The best definition of antibody is...

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

Cytokines released by TH1 cells...

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

A Treg cell deficiency could result in...

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

What type of immunity is NOT due to antibodies? 

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

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 antibody formation.  
D. They recognize antigens associated with MHC I
E. They are responsible for the memory response.  

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

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

The antibodies found in mucus, saliva, and tears are  

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

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

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

Which of the following destroys virus-infected cells?  

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

Cytokines released by TH1 cells...

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

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

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

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

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

What type of immunity results from recovery from mumps?  

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

The antibodies found on B cells are..

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

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

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

IL-2, produced by TH cells,

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