The amino acids of the protein keratin are arranged predominantly in an a helix. This secondary structure is stabilized by Biology The amino acids of the protein keratin are arranged predominantly in an a helix. This secondary structure is stabilized by A) covalent bonds. B) peptide bonds. C) ionic bonds. D) polar bonds. E) hydrogen bonds. Answer: E Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+
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