Question

define purines and pyrimidines

Answer 1

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    PURINES:

                 PURINES IS DEFINES AS THE COLOURLESS CRYSTALLINE COMPOUND WITH BASIC PROPERTIES, FORMING C5H4N4O3 GENERALLY  CALLED AS URIC ACID ON OXIDATION


  PYRIMIDINES:


   PYRIMIDINES IS AN AROMATIC COMPOUND COMPOSED OF CARBON AND NITROGEN ATOMS IN A SIX NUMBERED RING AND WE CAN ALSO CALLED AS PYRIMIDINES IS AN SIMPLE AROMATIC HETEROCYCLIC COUMPOUND.

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Answer 2

Answer:

Purines and pyrimidines are the nitrogen bases that hold DNA strands together through hydrogen bonds. The purines in DNA are adenine and guanine, the same as in RNA. The pyrimidines in DNA are cytosine and thymine; in RNA, they are cytosine and uracil.

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