Identify the two important classes of catalysts. Analyze the chemical reactions that take place when a biological catalyst combines with a reactant (substrate) to form an unstable intermediate.

1 answer

Surely you don't expect us to write this for you. Here is a site that contains almost anything you want to know about catalysts.
http://antoine.frostburg.edu/chem/senese/101/reactions/faq/examples-of-catalysts.shtml