123k views
5 votes
Thymine, Uracil, and Cytosine have one ring known as?

User Tommy Lees
by
7.5k points

1 Answer

3 votes

Final answer:

Adenine and guanine are purines, while cytosine, thymine, and uracil are pyrimidines.

Step-by-step explanation:

Adenine and guanine are classified as purines. The primary structure of a purine is two carbon-nitrogen rings. Cytosine, thymine, and uracil are classified as pyrimidines which have a single carbon-nitrogen ring as their primary structure. Each of these basic carbon-nitrogen rings has different functional groups attached to it. In molecular biology shorthand, the nitrogenous bases are simply known by their symbols A, T, G, C, and U. DNA contains A, T, G, and C whereas RNA contains A, U, G, and C.

User Anthonyv
by
8.2k points