identify the structure of the dna molecule
DNA structure. DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C).The order of these bases is what determines DNA's instructions, or genetic code.NA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C). The order of these bases is what determines DNA's instructions, or genetic code.
Rating Newest Oldest. Best Answer: DNA is a double helix molecule, with a sugar phosphate backbone with phosphodiester bonds joining Phosphate groups to sugars. The two strands are in an antiparallel configuration with nitrogenous bases joined by hydrogen bonds.est Answer: DNA is a double helix molecule, with a sugar phosphate backbone with phosphodiester bonds joining Phosphate groups to sugars.