Which of the following structures does NOT participate in H-bond formation?
A)the amino group of cytosine,adenine,and guanine
B)the ring nitrogens at position 3 of pyrimidines and 1 of purines
C)the carbon double bonds found in the bases
D)the carbonyl group at position 4 of uracil and thymine,position 2 of cytosine,and position 6 of guanine

Question

Quizplus · Accepted Answer

Carbon double bonds in the bases (C) do not have electronegative atoms involved that can participate in H-bond formation. The other options (A, B, and D) all have electronegative atoms that can participate in H-bond formation.

Which of the Following Structures Does NOT Participate in H-Bond