B cell receptors differ from T cell receptors in that
A. B cell receptor immunoglobulins can be secreted as antibodies, whereas T cell receptors are never secreted.
B. B cell receptors are immunoglobulin in nature, whereas T cell receptors are not immunoglobulin molecules.
C. B cell receptors are comprised of four polypeptides, whereas T cell receptors have only two polypeptides in their quaternary structure.
D. B cell receptors have two antigen binding sites, whereas T cell receptors have only one antigen binding site.
E. All of the choices represent differences between B cell and T cell receptors.
Answer: E
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What will be an ideal response?