In SDS-PAGE (Sodium Dobecyl Sulfate-polyacrelamide Gel Electrophoresis) proteins are separated on basis of: (A) Mass, (B) Charge, (C) Density, (D) Molecular weight
Answer is D. SDS PAGE electrophoresis is a variant of PAGE. separation of molecules will depend mainly on their molecular size. Hence it is mainly used for molecular weight determination as well as for assessing purity of proteins.Ref: DM Vasudevan - Textbook of Biochemistry, 7th edition, page no: 447