{"id":703,"date":"2024-07-13T09:23:03","date_gmt":"2024-07-13T09:23:03","guid":{"rendered":"https:\/\/www.meniit.com\/study-material\/?p=703"},"modified":"2024-07-29T06:20:44","modified_gmt":"2024-07-29T06:20:44","slug":"nucleotides","status":"publish","type":"post","link":"https:\/\/www.meniit.com\/study-material\/neet\/class-11th\/zoology\/nucleotides","title":{"rendered":"Nucleotides"},"content":{"rendered":"

Nucleotides forms the monomer of nucleic acids i.e. DNA and RNA. A nucleotide is composed of three components:<\/p>\n

(A) A phosphate group<\/p>\n

(B) Pentose sugar<\/p>\n

(C) Nitrogenous bases<\/p>\n

(A) Phosphate group<\/strong><\/p>\n

\"phosphate-group\"<\/p>\n

(B) Pentose sugar<\/strong>: RNA has ribose as base sugar while DNA shows the presence of Deoxyribose.<\/p>\n

\"pentose-sugar\"<\/p>\n

(C) Nitrogenous bases<\/strong> :\u00a0They are of two types, purines and pyrimidines.<\/p>\n

Purines<\/strong> are 9-membered double ring, nitrogen bases which posses nitrogen at 1, 3, 7 and 9 positions, e.g. adenine (A), guanine (G).<\/p>\n

Pyrimidines<\/strong> are 6-membered nitrogen bases that contain nitrogen at 1 and 3 positions, e.g., Cytosine (C), Thymine (T), Uracil (U).<\/p>\n

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