RNA, or ribonucleic acid, is a vital molecule in the field of molecular biology. It plays a crucial role in the flow of genetic information within cells, serving as a messenger that carries instructions from DNA to guide the synthesis of proteins. Unlike DNA, RNA is typically single-stranded and contains the nucleotide uracil instead of thymine. There are several types of RNA, each with specific functions. Messenger RNA (mRNA) carries genetic information from the DNA in the cell nucleus to the ribosomes, where protein synthesis occurs. Transfer RNA (tRNA) delivers amino acids to the ribosomes, ensuring that the correct sequence of amino acids is assembled during protein synthesis. Ribosomal RNA (rRNA) is a structural component of ribosomes, which are the cellular machinery responsible for protein synthesis. RNA is involved in various cellular processes beyond protein synthesis, such as gene regulation and the catalysis of biochemical reactions. Additionally, emerging research continues to unveil the diverse roles of RNA in cellular functions and disease mechanisms. The study of RNA has significant implications in understanding the fundamental processes of life and in the development of therapeutic interventions.