Which of the following should be added to denature a protein all the way back to primary structure?

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Which of the following should be added to denature a protein all the way back to primary structure?
A . reducing agent
B . oxidizing agent
C . water
D . ether

Answer: A

Explanation:

In order to denature proteins to their primary structure, a reducing agent is necessary to cleave the disulfide bonds in protein’s secondary structure.