Anti Bodies
Structures of anti-PCP antibody shows that the tight binding of PCP to the antibody is primarily due to

hydrophobic forces
electrostatic forces.
Van der Waals forces.
none of these

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Anti Bodies
A polyclonal antibody response

violates clonal selection
occurs during the lag phase of the immune response
is produced only in response to polymeric antigens
is produced by several B cells recognizing different pitopes on the same antigen

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Anti Bodies
The main function of antibodies is to

chemically combine with the antigen which induces it, inactivate the antigen and protect the body from disease
kill all the foreign bodies
generate antigens, thus conferring immunization
protect the circulatory system

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Anti Bodies
Each IgA antibody molecule consists of

two polypeptide chain and has two antigen binding site
three polypeptide chain and has two antigen binding site
two polypeptide chain and has one antigen binding site
four polypeptide chain and has two antigen binding site

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