

MCQOPTIONS
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1. |
Which characteristic is found in both purines and pyrimidines? |
A. | They both have aromatic rings that undergo substantial tautomerization at neutral pH. |
B. | They both are weak bases that can be positively charged at neutral pH. |
C. | They both have multiple pKa values that result in zwitterion forms. |
D. | They both can form stable N-glycosidic bonds with D-ribofuranose. |
Answer» E. | |