Which of the following is true about B cell antigen receptors but not T cell antigen receptors? Only B cell antigen receptors… A.have both light and heavy chains. B.contain disulfide bridges. C.have two antigen binding sites. D.have both constant and variable regions. E.are transmembrane proteins

• have two antigen binding sites.

Explanation:

The main difference is that T cell receptor has only one antigen binding site even if the structure is almost the same to B cell receptor which has two antigen-binding sites. The general structure of B cell receptor includes a membrane bound immunoglobulin that is connected to the signal transduction region by a disulfide bridge, however, T cell receptor also contains the disulfide bridge between the chains.  Both B cell receptor and T cell receptor have constant and variable regions. Both receptors are also made up of the heavy and light immunoglobulin chains.