医学免疫学(A1型题8)（Medical Immunology (A1 type 8)）.doc

医学免疫学(A1型题8)（Medical Immunology (A1 type 8)） One, A1 type questions: each examination questions below have A, B, C, D, E five alternative answers. Please choose the best answer from the corresponding letter card, and the corresponding number in the answer will be the black box. 1. Ig that combines with mast cells is A.IgA B.IgD C.IgE D.IgM E.IgG The correct answer: C 2. the highest content of Ig in serum is A.IgM B.IgA C.IgE D.IgG E.IgD The correct answer: D 3. pepsin can hydrolyze IgG molecules into A.F (ab ) 2 B.Fe C.F (ab ) 2 and pFc D.2Fab and Fc E.2Fab+pFc The correct answer: C The 4.Bence-jones protein is the Ig molecule A. heavy chain B. light chain C.Fab D.Fc E.F (ab ) 2 The correct answer: B The functional region of 5.IgG molecules that bind to the Fc receptor on macrophages is A.CL B.VL C.CH2 D.CH3 E.CH1 The correct answer: D The Fab segment energies of 6.Ig molecules A. through placenta B. activates complement C. binding antigen D. is fixed on the tissue cells E. consists of the V region of the heavy chain and light chain The correct answer: C 7. idiotypic determinants exist in Ig molecules A. heavy chain C zone B. light chain C region C. heavy chain V zone The V region of the heavy and light chains of D. E. whole Fab segment The correct answer: D 8. antibody diversity is due to The A. germline Ig gene includes multiple V region genes Somatic gene mutation in B.V region Gene rearrangement in V region of C.Ig D. these three mechanisms work Above E., A and C work The correct answer: D 9. light chain variable region genes are determined by A.V gene composition B.V J gene rearrangement C.V - D - J gene rearrangement D.VC conversion component Composition of E.VD gene rearrangement The correct answer: B 10. the first people to discover antibodies are A.Behring and Bei Li B.Erhlich C.Landsteiner D.Haurowitz E.Burnet The correct answer: A 11. the first to elucidate the structure of the titanium chain of antibody four is A.Porter and Edelman B.Jerne C.Miller D.Ko