Purines have __ ring(s), (each) containing _ nitrogen(s), whereas pyrimidines have _ ring(s), (each) containing ___ nitrogens.

A) 1; 1; 1; 1
B) 1; 2; 1; 2
C) 2; 1; 1; 2
D) 2; 2; 1; 1
E) 2; 2; 1; 2

Purines and pyrimidines are the nitrogenous bases. They are present in nucleotides. Adenine and guanine are the purine bases. Purine bases have two rings in their structure. Each ring has two nitrogen atoms as part of the ring. On the other hand, uracil, thymine and cytosine are the pyrimidine bases. Pyrimidines have a single ring in their structure. Each ring in pyrimidines also has two nitrogen atoms as part of the ring.

ednorobello92 ednorobello92 · Answer 2 · 2020-01-15T12:35:14+01:00

ednorobello92 ednorobello92

15-01-2020

Answer:

E

Explanation: Purines are nitrogenous bases that contains a two-ring carbon structure, with Adenine and Guanine as nitrogenous bases. while pyrimidines has a one-ring carbon structure with Cytosine and Thymine as its nitrogenous base.

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Purines have ____ ring(s), (each) containing _____ nitrogen(s), whereas pyrimidines have _____ ring(s), (each) containing _____ nitrogens. A) 1; 1; 1; 1 B) 1; 2; 1; 2 C) 2; 1; 1; 2 D) 2; 2; 1; 1 E) 2; 2; 1; 2

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Purines have __ ring(s), (each) containing _ nitrogen(s), whereas pyrimidines have _ ring(s), (each) containing ___ nitrogens.

A) 1; 1; 1; 1
B) 1; 2; 1; 2
C) 2; 1; 1; 2
D) 2; 2; 1; 1
E) 2; 2; 1; 2