Enzymes are biological molecules that act as catalysts in biochemical reactions, speeding up the rate of these reactions without being consumed in the process. They are essential for the proper functioning of cells and organisms, as they help regulate various metabolic processes by facilitating the conversion of substrates into products. Enzymes are highly specific in their actions, with each enzyme typically only catalyzing a specific reaction or group of reactions. They play a crucial role in various physiological processes, such as digestion, respiration, and energy production. Studying enzymes is fundamental to understand the mechanisms underlying these processes and to develop new therapeutic strategies for treating diseases.