Question

When comparing purines with pyrimidines, the best way to tell the difference between them is to look at the ring structures of the nitrogenous _____.

Answer 1

Purines and pyrimidines are two types of nitrogenous bases found in DNA and RNA, with differences in their ring structures.

Step-by-step explanation:

Purines and pyrimidines are two types of nitrogenous bases found in DNA and RNA. The main difference between them is in their ring structures. Purines, such as adenine (A) and guanine (G), have a double-ring structure, consisting of a six-carbon ring fused to a five-carbon ring. On the other hand, pyrimidines, like cytosine (C), thymine (T), and uracil (U), have a single six-carbon ring structure.