Immunoglobulins that are found on the surface of B cells and that may activate antibody production areA) IgA.B) IgD.C) IgE.D) IgG.E) IgM.
Immunoglobulins, also known as antibodies, are proteins produced by B cells and play a critical role in the immune system
Immunoglobulins, also known as antibodies, are proteins produced by B cells and play a critical role in the immune system. They help to recognize and neutralize pathogens like bacteria and viruses.
Among the options listed, the immunoglobulins found on the surface of B cells that can activate antibody production are IgD and IgM.
IgD (Immunoglobulin D):
– IgD is one of the five major classes of immunoglobulins.
– It is primarily found on the surface of mature B cells along with IgM.
– IgD functions as a receptor for antigen recognition and is involved in the activation of B cells.
– When an antigen binds to the IgD on a B cell, it can initiate signaling pathways that lead to the production of antibodies.
IgM (Immunoglobulin M):
– IgM is the first antibody produced by B cells during an immune response.
– It can exist as a monomer or as a pentamer (a molecule consisting of five units) and is the largest immunoglobulin.
– IgM is also present on the surface of mature B cells along with IgD.
– When B cells encounter antigens, IgM can bind to them and activate the B cell, leading to its differentiation into plasma cells that produce and secrete large amounts of antibodies, including IgM and other classes.
In summary, both IgD and IgM are immunoglobulins found on the surface of B cells that can activate antibody production. They play important roles in initiating immune responses against pathogens.
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