BiomoleculesHard

Question

Which of the following pairs of nitrogenous bases of nucleic acids, is wrongly matched with category mentioned againest it ?

Options

A.thymine, Uracil - Pyrimidines
B.Uracil, Cystosine - Pyrimidines
C.Guanine, Adenine - Purines
D.Adenine, Thymine - Purines

Solution

DNA and RNA the principle of genetic materials of living organisms are chemically called nucleic acids. These are polymerse of nucleotides. Each nucleotide is a composed of phosphoric acid, pentose sugar and nitrogenous base. The nitrogenous base are of two types, ie, purine and pyrimidines.
Purine are heterocyclic and two rings, eg, adenine, guanine.
Pyrimidines are single rings compound, eg, thymine, cytosine, uracil.

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