which-of-the-following-statements-correctly-describes-the-structural-difference-

Question

Which of the following statements correctly describes the structural difference between purines and pyrimidines?

Accepted Answer

Purines have two rings, while pyrimidines have one ring.

Answer

Purines have one ring, while pyrimidines have two rings.

Answer

Both purines and pyrimidines have two rings.

Answer

Purines and pyrimidines have the same ring structure.