Some enzymes can become damaging if they are active in the wrong place. For example pepsin is capable of destroying body cells, therefore stomach cells manufacture pepsin in an inactive called pepsinogen. The enzyme only becomes active when pepsinogen is exposed to a strong acid, cells lining the stomach are protected by a layer of mucus. If a sequence of reactions must take place in a set order the enzymes are often arranged closely together and in the correct order, to effectively 'hand-on' the product of their reaction. In fact most enzymes in cells are bound to membranes to control their activity.
Precise control is achieved by a process known as feedback inhibition.
The final product acts as a non-competitive inhibitors for one of the enzymes at the beginning of the pathway. Show Me Naming and classifying enzymes Enzymes usually have names which end in -ase, e.g. maltase and sucrase. There are six major groups of enzymes. Isomerases Convert molecules from one isomer to another Ligases New chemical bonds are formed, energy is required, e.g. synthesis of large molecules Industrial uses of enzymes Detergents - Substilin is used to digest protein, and improve the action of biological detergents. Medical - Glucose oxidase is used to detect the amount of glucose in urine, glucouria.