A.Kossel and AT Levene? Studying the chemical composition of nucleic acid ?? Nucleic acid from animal cells are a major component of nitrogen. The property was based so called nucleotide bases (Nucleotide base) or nitrogenous base (Nitrogenous base) which has different chemical structure is divided into two categories? - Purine (Purine) is based on a ring structure consisting of two bands, divided into two types: adenine (Adenine) than Theanine (Guanine)? - Prime Pyrimidines (Pyrimidine) is based on a structure consisting of rings, one band is divided into two types of thymine (Thymine) and King's Road (Cytosine).
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