The tRNA molecule is folded into a distinctive 'clover-shape'. Each tRNA molecule is able to bind and transport a specific amino acid. Ribosomal RNA or rRNA is used to construct ribosomes. Assembly of the subunits takes place at the nucleolus within the nucleus of the cell. The subunits then pass through the pores of the nuclear membrane, and final ribosome construction occurs in the cytoplasm.
Ribosomes provide the site for protein synthesis.
Messenger RNA or mRNA contains the coded information that serves as the instructions for protein synthesis. The messenger RNA contains the transcribed 'blueprint' telling the correct sequence of amino acids needed for the construction of specific protein molecules. Once all of the components have been produced, the genetic message that has been transcribed from DNA to messenger RNA is ready to be translated.