Various sugars and phosphates, see the reference.What moleculels make up the backbone of he DNA molecule?
';Although it may look complicated, the DNA in a cell is really just a pattern made up of four different parts called nucleotides. Imagine a set of blocks that has only four shapes, or an alphabet that has only four letters. DNA is a long string of these blocks or letters. Each nucleotide consists of a sugar (deoxyribose) bound on one side to a phosphate group and bound on the other side to a nitrogenous base.
* adenine (A) - a purine
* cytosine(C) - a pyrimidine
* guanine (G) - a purine
* thymine (T) - a pyrimidine';
Should help a bit
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