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Best Answer: DNA or known as Deoxyribonucleic Acid consists of two chains, strands composed of a large number of chemical compounds, called nucleotides, linked together to form a chain.These chains are arranged like a ladder that has been twisted into the shape of a winding staircase, called a double helix.est Answer: DNA or known as Deoxyribonucleic Acid consists of two chains, strands composed of a large number of chemical compounds, called nucleotides, linked together to form a chain.
DNA consists of a phosphate group, a sugar, and a nitrogenous base. The structure of DNA is a helical, double-stranded macromolecule with bases projecting into the interior of the molecule. These two strands are always complementary in sequence.he aromaticity of the pyrimidine (Cytosine, Thymine, Uracil (RNA)) and purine (Adenine, Guanine) ring systems and their electron-rich nature of-OH and-NH2 substituents enable them to undergo keto-enol tautomeric shifts. The keto tautomer is called a lactam and the enol tautomer is called lactim.