- ribonucleic acid, RNA - (biochemistry) a long linear polymer of nucleotides found in the nucleus but mainly in the cytoplasm of a cell where it is associated with microsomes; it transmits genetic information from DNA to the cytoplasm and controls certain chemical processes in the cell; "ribonucleic acid is the genetic material of some viruses"
--1 is a kind of polymer
--1 has parts: nucleic acid
--1 has substances:
--1 has particulars:ribose; adenine, A; cytosine, C; guanine, G; uracil, U messenger RNA, mRNA, template RNA, informational RNA; nuclear RNA, nRNA; transfer RNA, tRNA, acceptor RNA, soluble RNA