RNA
Ribonucleic acid RNA is the polymeric molecule fundamental in various biological roles in coding, decoding, regulation together with expression of genes. RNA & deoxyribonucleic acid DNA are nucleic acids. Along with lipids, proteins, and carbohydrates, nucleic acids constitute one of the four major macromolecules necessary for all asked forms of life. Like DNA, RNA is assembled as a group of nucleotides, but unlike DNA, RNA is found in manner as a single strand folded onto itself, rather than a paired double strand. Cellular organisms usage messenger RNA mRNA togenetic information using the nitrogenous bases of guanine, uracil, adenine, and cytosine, denoted by the letters G, U, A, and C that directs synthesis of specific proteins. many viruses encode their genetic information using an RNA genome.
Some RNA molecules play an active role within cells by catalyzing biological reactions, controlling gene expression, or sensing and communicating responses to cellular signals. One of these active processes is protein synthesis, a universal function in which RNA molecules direct the synthesis of proteins on ribosomes. This process uses transfer RNA tRNA molecules to deliver amino acids to the ribosome, where ribosomal RNA rRNA then links amino acids together to make-up coded proteins.