MCQ Medical Microbiology: Immunology (21-30)

21. All of the following are true with respect to IgM antibodies EXCEPT which one

A.   they are glycoprotein

B.    they fix complement

C.    they mediate allergic reaction

D.   they occur on the surface of lymphocytes

E.    they predominate in the primary response to antigen

22.  All of the following are true with respect to IgE molecules, EXCEPT which one?

A.   They are involved in mediating anti-parasitic immune responses.

B.    They are the least abundant immunoglobulin in the serum.

C.    They are the principal immunoglobulin class involved in allergic reactions.

D.   They can effect the release of histamine and other chemical mediators.

E.    They will cross the placenta and fix complement.

23.  Which of the following immunoglobulins is present normally in plasma at the highest concentration?

A.   IgA

B.    IgD

C.    IgE

D.   IgG

E.    IgM

MCQs In Immunology: Complement system (31-40)

31.   Complement component C3 is cleaved by:

A.      C3b

B.      C3bBb

C.      Factor B

D.      Factor D

E.       Factor H

32.   The membrane attack complex  in the complement pathway consists of:

A.      C3b3b,Bb

B.      C5b,6,7,8,9

C.      Colicins

D.      OH.

E.       Properdin

33.   Complement component C3b:

A.      Directly injures bacteria.

B.      Is an anaphylatoxin.

C.      Is chemotactic.

D.      Is the inactive form of C3.

E.       Opsonizes bacteria.

MCQ in Medical Microbiology, Immunology MCQs Answers

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·         MCQ in Medical Microbiology: Immunology MCQs(1-10)

·         MCQ in Medical Microbiology: Immunology MCQs(11-20)
      MCQs in Immunology 21-30
MCQs in Immunology (Complement System) 31-40

MCQ in Medical Microbiology: Immunology MCQs (11-20)

1.       Monoclonal antibodies are produced by

A)     hybridomas.

B)      lymphocytes.

C)      myeloma cells.         

D)     plasma cells.

       

2.       Opsonization refers to                  

A)     adherence to mucosal epithelial cells.

B)      antibody mediated viral inactivation.

C)      coating of microorganisms or other particles by antibody and/or complement.

D)     parasitic lysosomal degranulation.

3.       Which type of antibody is MOST effective in activating complement?

A)     IgG1

B)      IgG2

C)      IgG3

D)     IgM

MCQ in Medical Microbiology: Immunology MCQs (1-10)

MCQ in Medical Microbiology: Immunology MCQs (1-10)

1.       Specific immunity can be acquired either naturally or artificially and involves       

A)                 All of the below.              

B)                  antibodies.

C)                  antigens.            

D)                 the classical complement pathway.        

2.       Which DOES NOT provide long term immunity?

A)     Artificially acquired active immunity               

B)      Artificially acquired passive immunity

C)      Naturally acquired active immunity

D)     None of the above

3.       An epitope is    

A)     a B-cell.       

B)      a hapten.

C)      an antibody.

D)     the antigen determinant site.