Ribo-This is short for ribose and it is a pentose sugar. Contrast this with the sugar group in DNA which is dexoyribose. Nucleic-Refers to the fact that it originates in the nucleus.
DNA is a double helix formed by base pairs attached to a sugar-phosphate backbone. DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms.
DNA Structure. DNA structure â An overview. The DNA structure consists of two chainlike molecules (polynucleotides) that twist around each other to form the classic double-helix. The cellâs machinery forms polynucleotide chains by linking together four nucleotides.