All of the following enzymes are active within a cell except:
Ans. is 'a' ie Trypsin (Ref: Guyton and Hall, 10/e, p746; Harper's Biochem, 26/e, p76).Trypsin is a powerful pancreatic proteolytic enzyme which would digest the pancreatic cell that produced it, if not have been produce as a proenzyme (- its inactive form known as trypsinogen.) Trypsinogen is activated in the intestinal tract by enzyme called enterokinase.Pancreas has additional protective mechanism against self digestion by Trypsin - Secretion of trypsin inhibiter.All other options are enzymes of the glycolytic pathway which are in their active form within the cells.
Trypsin
Fumerase
Hexokinase
Alcohol dehydrogenase
Cell Physiology and Intercellular Connections