Ключевые слова: acid, adenine, amp, atom, biochemistry, bioenergetic, cage, carbon, cell, chemical, chemical structure, chemistry, chromosome, code, compound, dna, drug, flavoring agent, formula, gene, genetic, genome, glycosidic bond, helix, hosphate, hydrogen, illustration, intracellular, molecular, molecule, nitrogen, nitrogenous, notebook, nucleic, nucleotide, organic compound, oxygen, phosphate group, phosphoric, phosphorus, purine, ribofuranose, ribose, rna, science, sheet, structural formula, structure,