Anti Bodies
The immunoglobulin fold is

a β-barrel composed of a three- and a four-stranded antiparallel β-sheet
found only in IgG molecules
found six times in the IgG molecule
both (a) and (b)

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Anti Bodies
Papain digest IgG into

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

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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?

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

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