Final answer:
The five basic classes of antibodies are IgA, IgD, IgE, IgG, and IgM, each having unique roles and structural properties within the immune response. The correct answer to the student's question is option B.
Step-by-step explanation:
The Five Basic Classes of Antibodies
The five basic classes of antibodies are IgA, IgD, IgE, IgG, and IgM. These classes of antibodies have distinct functions in the immune response, with IgG being the predominant class, making up about 80 percent of all antibodies. They each have unique structural properties, such as the number of constant domains in their heavy chains which affects their mechanism of action. IgM and IgD can function as antigen receptors for naïve B cells, but only IgM is secreted. The size, arrangement, and location of the antibodies within the body differ among these classes, influencing their specific roles in the immune system's defense.
The correct answer to the question of which of the following represent the five basic classes of antibodies is: B. IgA, IgD, IgE, IgG, and IgM.