Binding of IgG or IgM to an antigen
A)Activates the complement system by the classical complement pathway
B)Facilitates production of MAC
C)Stimulates phagocytosis by enabling phagocytes to be bound to the antigen
D)Is an example of allosteric protein modulation
E)Is described by all of these choices

Question

Quizplus · Accepted Answer

Binding of IgG or IgM to an antigen can activate the complement system by the classical complement pathway, facilitate production of MAC, and stimulate phagocytosis by enabling phagocytes to be bound to the antigen. Therefore, all of these choices are correct. It is not an example of allosteric protein modulation, which involves a change in the shape of a protein due to binding of a molecule to a site other than the active site.

Binding of IgG or IgM to an Antigen