The most accurate description of the basic structure of Ig molecule is
A tetrapeptide chain consisting of 2 heavy chains and 2 light chains
B. A dipeptide chain consisting of 1 heavy chain and 1 light chain
C. A tetrapeptide chain consisting of 2 identical heavy chains and 2 identical light chains
D. A tripeptide chain consisting of 1 heavy chain and 1 light chain
E. A tetrapeptide chain consisting of 4 identical peptide chains
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The Igs without hinge area are
A. IgA and IgD
B. IgM and IgE
C. IgA and IgM
D. IgG and IgE
E. IgA and IgE
The Ig with the strongest ability to activate complement is
A. SIgA
B. IgM
C. IgG
D. IgD
E. IgE
The Igs that exist in the form of monomer are
A. IgA、IgD、IgM
B. IgM、IgE、IgD
C. IgA、IgM、IgG
D. IgE、IgG、IgD
E. IgA、IgE、IgM
Monoclonal antibodies are characterized by
A. Low specificity
B. It is prone to cross reaction
C. It is difficult to prepare in large quantities
D. It has a wide range of sources
E. It only recognizes one specific antigen
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