This document provides an overview of enzymes. It explains that enzymes are proteins that act as catalysts to accelerate chemical reactions without being permanently altered. Enzymes are specific and reusable, and their names typically end in "-ase". The document also describes how enzymes work by weakening bonds to lower activation energy. Additionally, it explains that enzymes bind to substrates at active sites and may undergo an induced fit when binding. Finally, the document outlines factors that can affect enzyme activity, such as environmental conditions, cofactors/coenzymes, and competitive or noncompetitive inhibitors.