Living organisms make and use three main types of ribonucleic acids (RNA) for their biological functions: ribosomal RNA (rRNA), messenger RNA (mRNA), transfer RNA (tRNA). Sort each description by the type of RNA it describes. Drag each item to the appropriate bin. View Available Hint(s). ResetHelp specifies the amino acid sequence for a protein contains exonsis. The most abundant form of RNA contains an anticodonis, a component of ribosomeshas amino acids covalently attached.