The three major types of RNA that occur in cells are rRNA, mRNA, and transfer RNA (tRNA) Molecules of rRNA are synthesized in a specialized region of the cell nucleus called the nucleolus, which appears as a dense area within the nucleus and contains the genes that encode rRNA 372 viewsThe structure of RNA is basically a repeating chain of ribose and phosphate moieties, with one of the four bases attached to each riboseIn this templating scheme, the DNA base T specifies A in the RNA, A specifies U, C specifies G, and G specifies C Synthesis of RNA is usually catalyzed by an enzyme RNA polymerase, using DNA as a templateThe structure of RNA is basically a repeating chain of ribose and phosphate moieties, with one of the four bases attached to each riboseIn this templating scheme, the DNA base T specifies A in the RNA, A specifies U, C specifies G, and G specifies C Synthesis of RNA is usually catalyzed by an enzyme RNA polymerase, using DNA as a template Ribosomal Rna Definition Functi...