Ribonucleic Acid, or RNA, is a molecule essential for various biological roles in cells. It is primarily involved in the process of translating genetic information from DNA into proteins, which perform numerous functions in living organisms. RNA is typically single-stranded and consists of a sequence of nucleotides, which are the building blocks of the molecule. There are several types of RNA, including messenger RNA (mRNA), which carries genetic information from DNA to ribosomes, and transfer RNA (tRNA), which helps assemble amino acids into proteins. Ribosomal RNA (rRNA) is a key component of ribosomes, the cellular machinery that synthesizes proteins. Together, these forms of RNA play crucial roles in gene expression and regulation.