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. | |