All Are Important Functional Groups Participating in H-Bond Formation EXCEPT

question 9

Multiple Choice

All are important functional groups participating in H-bond formation EXCEPT:

• A) amino group of the cytosine, adenine, and guanine.
• B) the ring nitrogens at position 3 of pyrimidines and 1 of purines.
• C) the electronegative oxygen atoms.
• D) the electron density in the double bonds of the bases.
• E) the carbonyl group at position 4 of uracil and thymine, position 2 of cytosine, and position 6 of guanine.

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