And nucleotides and amino acids are two completely different types of molecules. So the question is, in the process of translation, how do the ribosomes actually know to basically create that specific sequence of amino acids if the RNA consists of these different molecules we call nucleotides? Well, the ribosomes of the cell basically use a system called the genetic code. So the cells of our body and the cells of other liver organisms use the system called the genetic code. And the genetic code is used to basically translate that sequence of nucleotides on the RNA molecule into its corresponding sequence of amino acids on that polypeptide chain. Now, this is basically our genetic code, and we'll see exactly what it actually means in just a moment.