Respiratory Disease

A complex compound of high molecular weight that functions in cellular protein synthesis and replaces DNA (deoxyribonucleic acid) as a carrier of genetic codes in some viruses. The nitrogenous bases in RNA are adenine, guanine, cytosine, and uracil, which replaces thymine in DNA. This flexible molecule tells the cell’s protein-making factories what DNA wants them to do, stores genetic information and may have helped life get its start.