When a base is combined with a sugar via a b -glycosidic bond, a nucleoside is formed. Nucleotides - 2 important biological roles 1. The bases are side groups along the sugar-phosphate backbone.
Genetic information is encoded within the sequence of bases.
The DNA in a typical human would stretch from here to the sun and back 500 times. RNA Comes in 3 Varieties, All Single-Stranded but with large amounts of intrastrand H bonds formed between intrachain complementary regions 1. These triplets are called codons. These 3 varieties of RNA are integral parts of the molecular machinery for synthesizing proteins.