Gel Electrophoresis
The subunit molecular weight as well as the number of subunits in the quaternary structure can be determined by

isoelectric focusing
gel filtration chromatography
combining information from (a)and (b)
SDS-PAGE electrophoresis

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Gel Electrophoresis
In an SDS-PAGE

proteins are denatured by the SDS
proteins have the same charge-to-mass ratio
smaller proteins migrate more rapidly through the gel
All of these

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Gel Electrophoresis
In SDS-PAGE, the protein sample is first

fractionated by electrophoresis then treated with an oxidizing agent followed by anionic detergent.
None of these
treated with a reducing agent and then with anionic detergent followed by fractionation by electrophoresis
treated with a oxidizing agent and then with anionic detergent followed by fractionation by electrophoresis

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