The nitrogenous base can either be a purine such as a Adenine or Guanine or a pyrimidine such as a Uracil or Cytosine. rNTPs have significant biological uses, they can serve as building blocks of RNA synthesis, primers in DNA replication, stores of chemical energy, chiefly Adenosine triphosphate (ATP) and more.
Nitrogenous bases are either purines like Adenine or Guanine, or pyrimidines such as Uracil or Cytosine. rNTPs have important biological uses; they can be used in RNA synthesis, DNA replication primers, energy storage (especially ATP), and other roles.