Final answer:
The difference between membrane-bound and secreted Ig lies in their location and function in the immune system.
Step-by-step explanation:
The difference between membrane-bound and secreted Ig lies in their location and function in the immune system.
Membrane-bound Ig, specifically IgD, is found on the surface of B cells and serves as an antigen-binding receptor. It is involved in the initial recognition of antigens.
On the other hand, secreted Ig, such as IgM, is released into the blood and bodily fluids to help fight infections. It is involved in the primary and secondary immune responses.