How does the structure of the peptide bond make the structure of proteins relatively rigid? Select the single best answer. The R

Question

How does the structure of the peptide bond make the structure of proteins relatively rigid? Select the single best answer.
The R groups on adjacent amino acids are on opposite sides of the extended peptide chain,
adding to the rigidity.
The double bond between carbon and oxygen restricts free rotation.
The bond between hydrogen and nitrogen restricts free rotation.
The partially double bonded character of the resonance structure restricts free rotation.

Kunduz · Accepted Answer

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