Question

What is the function of most IgSFs?

1) to cause cell adhesion to surface
2) to aid in cell division
3) to guide embryonic development
4) to mediate specific interactions of lymphocytes with cells needed for the immune response

Answer 1

Most IgSFs are involved in mediating specific interactions of lymphocytes with cells needed for the immune response. They include various antibody classes like IgM, IgD, IgG, IgE, and IgA which have unique roles such as triggering allergic reactions, facilitating ADCC, and serving as B cell receptors.

Step-by-step explanation:

The IgSFs or Immunoglobulin Superfamily members primarily function as cell adhesion molecules and play a critical role in the immune system. The correct answer to the question regarding the function of most IgSFs is to mediate specific interactions of lymphocytes with cells needed for the immune response. These molecules include various classes of antibodies, such as IgM, IgD, IgG, IgE, and IgA, each serving different roles within the immune system. For instance, IgE mediates allergic reactions by binding to mast cells and causing degranulation, while IgG can activate complement and facilitate antibody-dependent cell-mediated cytotoxicity (ADCC). Additionally, IgM and IgD can function as B cell antigen receptors, aiding the maturation of B cells into plasma cells, which are crucial for the humoral immune response against extracellular pathogens and toxins.