So in the process of forming this peptide bond, we always release a water molecule. And that's why this reaction is known as a dehydrolysis reaction or a condensation, because we release a water molecule. So we have amino acid A and B react to form a dipeptide C, and we also release a water molecule. So going this way, we have a dehydrolysis a condensation reaction. But if we go in reverse, if this bond breaks by using a water molecule that is known as a hydrolysis reaction. Now, let's take a look at the arrows.