And the second reason is to basically increase its energy, make it less stable, more reactive, so that it can form more linkages and can actually break down and form those ATP molecules. Now, let's move on to the process of glycosidation. And before we actually examine what that is, let's begin once again with this same beta animal of glucose. So we essentially have the beta D glucose molecule in its cyclic form. Now, even though the cyclic form is more stable and it's going to predominate at equilibrium, we're still going to form a very tiny amount with less than 1% of the open chain of this deglucose molecule. And in the open chain we see that we have the aldehyde.