Adjacent ribose nucleotide bases are chemically attached ... Additionally, RNA contains ribose sugars rather than deoxyribose sugars, which makes RNA more unstable and more prone to degradation.

Each nucleoside triphosphate is made up of three phosphates (represented here by yellow spheres), a deoxyribose sugar ... drive the incorporation of each nucleotide into the growing DNA chain.

The backbone of the DNA double helix consists of alternating phosphate and deoxyribose sugar molecules ... This is known as the base-pairing rule. A nucleotide consists of 1 phosphate, 1 sugar ...