1. Tardigrade
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  4. In pyrimidines, N is at position in its one ring.

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Q. In pyrimidines, N is at _________ position in its one ring.

NTA AbhyasNTA Abhyas 2020

Solution:

Purines are 9-membered double rings which include Guanine and Adenine. A purine has an imidazole ring joined to a pyrimidine ring at 4 and 5 positions. Purines have nitrogen at 1,3,7 and 9 positions. Pyrimidines are 6-membered rings and have nitrogen at 1 and 3 position. Thymine, uracil, and cytosine come under pyrimidine.