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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 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).