Michaelis-Menten kinetics, also known as the Michaelis-Menten model, describes the rate of enzyme-catalyzed reactions. Some synonyms for this term include enzyme kinetics, enzyme kinetics models, and enzyme activity modeling. Additionally, it is sometimes referred to as the substrate-enzyme model or just the Michaelis model. It is important to note that this model assumes that enzyme activity reaches a saturation point at higher substrate concentrations due to all active sites being occupied. Other related terms include enzyme kinetics assays, which are laboratory tests used to measure the rate of enzyme reactions, and enzyme inhibitors, which are compounds that interfere with or slow enzymatic reactions.