| A major category of applications is the use of enzymes to catalyze complex reactions for which there are no conventional catalysts. |
| Furthermore, even enzymes that catalyze apparently identical steps in catabolic and anabolic routes may exhibit different properties. |
| Enzymes tend to be more active, i.e., they catalyze reactions faster, than synthetic catalysts at ambient temperatures. |
| Zeolites can soak up liquid or gas molecules and also catalyze chemical reactions. |
| Ferrous and ferric iron catalyze the formation of reactive oxygen metabolites, which may mediate mucosal injury. |
| The resulting chlorine atoms that are generated catalyze the depletion of the ozone layer in the stratosphere. |
