Biology Practice Test 2026 | Exam Prep Questions And Answers

In SDS-PAGE, what is the primary role of sodium dodecyl sulfate (SDS)?

It denatures proteins and coats them in negative charge proportional to mass It cross-links proteins to fix their native fold It removes disulfide bonds without affecting charge It catalyses protein cleavage at lysine residues

Correct Answer:

It denatures proteins and coats them in negative charge proportional to mass

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