So either ATP or Creatine can insert the active site first. Once both of those reactants the substrates into the active site, only then can we actually transform the two reactants into the two products. And once we form the two products, the order at which the two products actually depart does not matter. So this is the difference between ordered sequential reactions and random sequential reactions. And the underlying fact about these two reactions is that the two substrate molecules have to bind to the active side before that reaction actually takes place. So we have to form this three molecule structure known as the ternary structure.