The two purines found in RNA are_____________and _____________Answers: A. CytosineB. AdenineC. GuanineD. UracilE. Thymine

The two purines found in RNA are Adenine and Guanine.

Explanation:

Purines are one of the two classes of nitrogenous bases that are essential components of nucleic acids (RNA and DNA). In RNA, the purines are adenine (A) and guanine (G).

1. Adenine (A): This purine base pairs with uracil in RNA (instead of thymine as in DNA) and plays a critical role in various biological processes, including energy transfer (as ATP) and signaling (as cAMP).

2. Guanine (G): This purine base pairs with cytosine in RNA; it is involved in multiple aspects of cellular metabolism and genetic information.

In contrast, cytosine (C) is a pyrimidine found in RNA as well, along with uracil (U), while thymine (T) is specific to DNA. Thus, adenine and guanine are the correct answers.