8. The class of immunoglobulin, most abundant in body is
A.IgD
B.IgE
C.IgG
D.IgM

---

9. Which is not a function of IgG?
A.Major antibody in serum
B.First antibody type produced against an antigen during the primary antibody response
C.Activates or fixes complement
D.Involved in opsonization

---

10. J chain is present in
A.IgA
B.IgM
C.Both (a) and (b)
D.IgE

---

11. Heat-labile class of immunoglobulins include
A.IgA
B.IgE
C.IgG
D.IgM

---

12. Which of the following (s) is/are function (s) of Fc fragment of IgG?
A.It determines catabolic rate
B.It binds complement
C.It is related to passage of IgG across the placental barrier
D.All of these

---

13. Which of the following is the phylogenetically oldest immunoglobulin?
A.IgE
B.IgM
C.IgG
D.All are similar

---

14. The secretary component of sIgA is
A.made by plasma cells that secrete dimeric IgA
B.added to dimeric IgA by the M cell
C.formed by cleavage of an epithelial cell receptor used to transport the dimeric IgA across the epithelial cell
D.made by T cells

---