Question

1. When an individual receives antibodies that were produced by another person, or animal, providing short lived or temporary immunity, that is referred as:

1. active immunity
2. humoral immunity
3. immunosuppression
4. passive acquired immunity
5. immunocompetence

2.  A method to artificially induce an immune response to an infectious disease is:

1. immunity
2. resistance
3. antitoxin
4. vaccination
5. conjugation

3. It is sometimes difficult to produce an immunization against certain pathogens because   they frequently change their molecular protein coat.  This is called:

1. protective antibodies
2. antigenic variation
3. attenuation
4. hypergammaglobulinemia
5. artificial active acquired immunity

4. Which group is responsible for T or B cell activation, fever, and macrophage activation?

1. Interferons
2. Interleukins
3. Colony stimulating factors
4. Tumor necrosis factor
5. Cell adhesion molecules

5. The Clonal Selection theory postulates that:

a. lymphocytes bear a single receptor with unique specificity
b. receptor binding with high affinity leads to lymphocyte activation
c. activated lymphocytes have receptors that bear identical specificity as
      their parent lymphocytes
d. lymphocytes with receptors for ubiquitous self molecules are
      eliminated in early cell development
e. all of the above

6. Which of the following statements about Macrophages is not true?

1. they engulf foreign pathogens via phagocytosis
2. they are involved in Antigen presentation
3. they begin as immature monocytes
4. they are involved in the allergic response

e.    they function as important scavenger cells

7.. Which is not a characteristic of the inflammatory response?

a.     delivery of additional effector molecules to the infection site                                                        

   b.     inducing local blood clotting                                                                                           

    c.     processing and presenting foreign antigen peptide fragments                                   

     d.     promoting the repair of damaged tissue                                                                        

     e.     all of the above are characteristics of inflammation

Answer 1

1.D.passive acquired immunity

Explanation -

Passive acquired immunity is the immunity which can be passed to another person for the temporary survival.It can be two types - natural and induced passive immunity. Natural immunity refers to the transfer of the maternal antibodies to the fetal bloodstream whereas induced passive immunity refers to the transfer of antibodies through injections when immediate protection is needed from certain disease.

Immunosuppresion is the condition where there is partial or complete suppresion of immune response occurs.Immunocompetance is the ability of human body to generate the natural immune response against certain antigens. Active immunity results when antibodies is produced by immune system in presence of antigens. Humoral immunity is initiated by the macromolecules (secreted antibodies,antimicrobial peptides and complement proteins) present in the extacellular fluid.

2.d vaccination

3.b antigenic variation

4 a. interferons

5 e. all of the above

6.b they are involved in Antigen presentation

7 c processing and presenting foreign antigen peptide fragments