Gel Electrophoresis
Proteins are separated in an SDS-PAGE experiment on the basis of their

molecular weight
negatively charged side chains
different isoelectric points
positively charged side chains

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Gel Electrophoresis
In an SDS-PAGE

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

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

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

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