Hydrogen bonds in a-helices are
Question: Hydrogen bonds in a-helices are
[A].
more numerous than Vander Waals interactions 
not present at Phe residues 
analogous to the steps in a spiral staircase 
roughly parallel to the helix axis 
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.
