Purines and Pyrimidines Exist in Two Tautomeric Forms (Lactam and Lactim);nucleosides

question 79

Multiple Choice

Purines and pyrimidines exist in two tautomeric forms (lactam and lactim) ;nucleosides exist in two conformations (syn and anti) .The most common forms found in cells are

• A)lactam and anti.
• B)lactam and syn.
• C)lactim and anti.
• D)lactim and syn.

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