<prompt> All of the covalent modification regulate enzyme kinetics exceptPhosphorylationAcetylationADP RibosylationGlycosylation  <response>: Reversible covalent modifications Phosphorylation Dephosphorylation ADP Ribosylation Methylation Acetylation.Irreversible Covalent Modification Zymogen activation Partial Proteolysis. 