Enzymes contain a(n) ____________ that is formed to fit a specific type of ____________ . Once the ____________ binds to the enz
yme, a reaction takes place and ____________ are formed. Enzymes function by ____________ the activation energy required for the reaction to take place. Enzymes are regulated by conditions that change the shape of their ____________ , meaning that they function best at a specific temperature and pH. For example, within the digestive system, ____________ is an enzyme that functions in the stomach, which has a pH of 2.0. In contrast ____________ is an enzyme that functions in the small intestine, which has a pH of 7.35. By changing the pH between the stomach and small intestine, it is possible to turn ____________ off and turn ____________ on.
Enzymes contain a(n) active site that is formed to fit a specific type of substrate . Once the substrate binds to the enzyme, a reaction takes place and products are formed. Enzymes function by decreasing the activation energy required for the reaction to take place. Enzymes are regulated by conditions that change the shape of their active site , meaning that they function best at a specific temperature and pH. For example, within the digestive system, pepsin is an enzyme that functions in the stomach, which has a pH of 2.0. In contrast trypsin is an enzyme that functions in the small intestine, which has a pH of 7.35. By changing the pH between the stomach and small intestine, it is possible to turn trypsin off and turn pepsin on.
