Protein purification and separation can be done by all except:: (A) Chromatography, (B) Centrifugation, (C) Electrophoresis, (D) Densitometry
Answer is D. D i.e. DensitometrySDS polyacrylamide gel electrophoresis is method of protein seperation & purification on the basis of molecular sizeQ. Whereas electrophoretic mobility of protein in native (non-denaturating) gel electrophoresis and 2-D gel electrophoresis depends on both charge (PI) and its mass (hydrodynamic size). Densitometry is a method to quantitate protein in tissueQ.