35. Immunoglobulins are divalent because (a) they contain two antigen binding sites, (b) they can bind to two different antigens, (c) they can form multimers, (d) they have a heavy chain and a light chain, (e) they are positively charged. 36. Which of the following statements about pepsin is correct? It cuts immunoglobulins into (a) three fragments, two of which have antigen binding sites, (b) two fragments with antigen binding sites and one Fc region, (c) into many fragments, (d) one fragment with two antigen binding sites, (e) none of the above. 37. The heavy chain classes that contain four constant region domains are part of (a) IgA, IgD, and IgG, (b) IgM and IgE, (c) IgG, IgD and IgE, (d) IgM and IgA, (e) none of these combinations is correct. 38. The immunoglobulin class that can form dimers and trimers is (a) IgE, (b) IgD, (c) IgA, (d) IgG, (e) IgM. 39. Immunoglobulins are present on the membranes of (a) lymphocytes, (b) B lymphocytes, (c) T lymphocytes, (d) NK cells, (e) all lymphoid cells. 40. Light chains have all of the following characteristics except (a) isotypes of kappa or lambda, (b) two domains of 110 amino acids each, (c) five cysteine amino acids, (d) effector function, (e) three hypervariable regions..
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Immunoglobulins are divalent because they contain two antigen binding sites. So, the correct answer is (a). Show more…
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