Matching Pairs Enzyme -Regulation of activityOnline version Covers various forms of enzyme regulation inside cells by Dr MAHABOOB KHAN SULAIMAN 1 Protein modification 2 Longer, inactive form of an enzyme 3 Feedback Inhibition 4 Allosteric enzyme 5 Zymogen digestive tract enzymes are secreted in this form Occurs generally with the help of allosteric enzymes Zymogen activity is regulated by activator or inhibitors small, covalent, reversible change of an enzyme from active to inactive form and vice versa