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

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

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Anti Bodies
Papain digest IgG into

three Fab fragments and two Fc fragments
three Fab fragments and three Fc fragments
two Fab fragments and one Fc fragment
two Fab fragments and two Fc fragments

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Anti Bodies
Antibodies in the human immune system can identify approximately 108 different molecules Which one of the following is correct?

This diversity is generated from 108 different immunoglobin genes
Most of these antibodies recognize small organic molecules
Most of these antibodies recognize proteins
Many of these molecules are self-antigens

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Anti Bodies
Each IgA antibody molecule consists of

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

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