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Purification of a protein can be measured as an increase in _____________

(a) temperature

(b) pH value

(c) specific activity

(d) polarity

I had been asked this question at a job interview.

The origin of the question is Protein Techniques in chapter Techniques in Cell Biology of Cell Biology

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The correct answer is (c) specific activity

Easiest explanation: Purification of a protein can be measured as an increase in the specific activity of the protein. Specific activity is the ratio of amount of that protein to the total amount of protein in that sample.

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