the backbone of a dna molecule is made up of sugars and
What makes up the backbone of the DNA molecule? Sugars and Phosphates A sugar (deoxyribose, a sugar with, among other elements, 5 carbon atoms) and phosphates to bond them together.hat makes up the backbone of the DNA molecule? Sugars and Phosphates A sugar (deoxyribose, a sugar with, among other elements, 5 carbon atoms) and phosphates to bond them together.