苏州大学《免疫学》E卷苏州大学《免疫学》E卷.doc

苏州大学《免疫学》E卷 考试形式 闭卷 院系 ___________ 年级 ____________ 专业 ____________ 学号 ___________ 姓名 ____________ 成绩 ____________ A. Multiple choice questions (1’ * 20) 1. Opsonins include A. perforin B. magainins C. C9 D. C3b E. IFN-? 2. Both mast cells and basophils A. are phagocytic B. circulate in the blood stream C. are found primarily in lymph nodes D. have receptors for IgM antibodies E. release histamine 3. Helper T cells are distinguished from cytotoxic T cells by the presence of A. CD2 B. CD4 C. CD3 D. IL-2 receptor E. class II MHC antigen 4. Newborns A. receive IgM antibodies from the mother through placental transfer B. have virtually a full complement of maternal IgG antibodies C. have very few lymphocytes in their circulation D. respond to antigens as well as adults E. receive maternal B cells 5. IgE A. is bound together by J chain B. binds to mast cells through its Fab region C. differs from IgG antibody because of its different H chains D. is present in high concentration in serum 6. IgA A. is present in milk and saliva B. is involved in hay fever C. activates complement by the classical pathway D. crosses the placenta 7. Immunoglobulin light chains A. are joined to heavy chains by peptide bonds B. can be present as both k and l chains as part of a single Ig molecule C. are not found in every major immunoglobulin class D. all have the same amino acid composition E. are present in the Fab fragment of Ig 8. A B cell can express on its cell surface A. membrane IgM and IgD at the same time B. both types of light chain C. secretory component D. IgG that can bind several different unrelated antigens 9. The T cell antigen receptor A. recognizes epitopes on linear peptides associated with MHC determinants B. has Ig light chains C. is made up a heavy chain and ?2 microglobulin D. recognizes conformational epitopes on the native antigen ????Clonal selection