Immunology MCQ exam, True answer in Red
1. All of the following are true with respect to IgM antibodies EXCEPT which one
A. they fix complement
B. they occur on the surface of lymphocytes
C. they predominate in the primary response to antigen
D. they are glycoproteins
E. they mediate allergic reaction
2. One principal function of complement is to
A. inactivate perforins
B. mediate the release of histamine