Protein Purification
During successful purification scheme, this may be expected that the

number of proteins in the sample decreases
both (a) and (c)
specific activity increases
specific activity decreases

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Protein Purification
In ion-exchange chromatography

proteins are separated on the basis of their net charge
proteins are separated on the basis of their size
either (b) or (c)
proteins are separated on the basis of their shape

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