One of the most remarkable aspects of the human immune system is
its diversity, that is, the ability to recognize a wide range of antigens and to
mount a specific antibody response. This is called clonal selection. At the
cellular level, which of the following are primarily responsible for such
specificity?
a.Cytotoxic T cells
b.Hypervariable regions in domains of B cells
c.The major histocompatibility complex
d.Specific T cell receptors
e.Memory cells
ans= B
Expl-The great heterogeneity in
the B cell response is characterized by a wide variety of antigenic stimuli.
The end result of this remarkable process is a set of very specific surface
receptors on B lymphocytes. However, it is the hypervariable regions in the
variable domain of these B cells that provide the amino acid residues that
confer specificity by synthesis of surface immunoglobulin receptors. T
cells, on the other hand, do not secrete immunoglobulins.
its diversity, that is, the ability to recognize a wide range of antigens and to
mount a specific antibody response. This is called clonal selection. At the
cellular level, which of the following are primarily responsible for such
specificity?
a.Cytotoxic T cells
b.Hypervariable regions in domains of B cells
c.The major histocompatibility complex
d.Specific T cell receptors
e.Memory cells
ans= B
Expl-The great heterogeneity in
the B cell response is characterized by a wide variety of antigenic stimuli.
The end result of this remarkable process is a set of very specific surface
receptors on B lymphocytes. However, it is the hypervariable regions in the
variable domain of these B cells that provide the amino acid residues that
confer specificity by synthesis of surface immunoglobulin receptors. T
cells, on the other hand, do not secrete immunoglobulins.
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