A) IgD.
B) IgM.
C) IgA.
D) IgG.
E) IgE.
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A) Once they are mature, they migrate to secondary lymphoid organs.
B) B and T lymphocytes can be differentiated under the bright-field light microscope.
C) Lymphocytes have integral surface proteins by which they can be recognized.
D) The glycoproteins on the surface of a lymphocyte are designated with the prefix CD, for "cluster of differentiation."
E) Lymphocytes have different types of CD molecules in their cytoplasmic membranes.
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A) innate immunity
B) naturally acquired passive immunity
C) artificially acquired active immunity
D) artificially acquired passive immunity
E) naturally acquired active immunity
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A) Antibodies are formed of four polypeptide chains.
B) Antibodies have two long peptide chains known as heavy chains.
C) Antibodies have two short peptide chains known as light chains.
D) The stem and arm are connected by a hinge.
E) The heavy and light chains are connected by hydrogen bonds.
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A) IgA antibodies
B) IgG antibodies
C) IgE antibodies
D) IgD antibodies
E) IgA and IgG antibodies
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B cell activation involves many steps.Fi...View Answer
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A) activation of the dendritic cell to become a plasma cell
B) display of epitope-MHC I complexes on the surface of the cell
C) suppression of the immune response to the microbe
D) display of microbial fragments with CD8 glycoproteins
E) display of microbial epitope-MHC II complexes on the cell surface
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A) a bacterium inside a cell
B) a virus inside a cell
C) a bacterium outside a cell
D) a noninfected human cell
E) the malaria parasite inside a red blood cell
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A) It is the third line of defense.
B) It has memory.
C) It changes little with repeated exposure to the same pathogen.
D) It is acquired.
E) It is the body's ability to respond to specific invading pathogens.
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A) They live for many years and function as memory cells.
B) They are descended from activated B cells.
C) They can produce large quantities of antibodies on a daily basis.
D) They secrete a single type of antibody molecule specific for a single epitope.
E) The antibodies they produce can remain in circulation for weeks.
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A) the skin.
B) red blood cells.
C) cytoplasmic membranes of nucleated cells.
D) muscle cells.
E) professional antigen-presenting cells.
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A) the bone marrow
B) the spleen
C) the liver
D) both the bone marrow and the spleen
E) the thymus
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