Which of the following statements about proteins is TRUE? A. A ?-pleated sheet is a structure formed by hydrogen bonds between every fourth amino acid in a polypeptide chain. B. ?-helices make up most fibrous proteins such as the silk protein of a spider's web. C. Hydrogen bonds are generally weak, yet they stabilize protein secondary structures because they are found throughout the polypeptide backbone. D. Hydrogen bonds between amino acid side chains (R groups) are responsible for stabilizing a protein's secondary structure.
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Step 1: Beta-pleated sheets are formed by hydrogen bonds between amino and carbonyl groups, not every fourth amino acid in a polypeptide chain. Show more…
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