Of the five bases found in nucleic acids, which are purines and which are pyrimidines?
A) Pyrimidines = adenine and guanosine: Purines = cytosine, thymine, and uracil
B) Pyrimidines = cytosine and uracil : Purines = adenine, thymine and guanosine
C) Pyrimidines = cytosine, thymine and uracil : Purines = adenine and guanosine
D) Pyrimidines = thymine and uracil : Purines = cytosine, adenine and guanosine
E) Pyrimidines = cytosine, adenine and guanosine: Purines = thymine, and uracil

Question

Quizplus · Accepted Answer

Purines include adenine and guanosine, which have two rings in their structures, while pyrimidines include cytosine, thymine, and uracil, which have a single ring in their structures.

Of the Five Bases Found in Nucleic Acids, Which Are