Gel Electrophoresis
In a gel filtration column

smaller proteins enter the beads more readily
large proteins elute first
large proteins enter the beads more readily
both (a) and (b)

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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
None of these
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.

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