Enzymes are protein substances that play a very important role in various biochemical processes in the body. "Enzymes are present in all living cells and promote the conversion of some substances into others. Enzymes act as catalysts in virtually all biochemical reactions taking place in living organisms. As of 2013, more than 5,000 different enzymes have been described. They play a crucial role in all life processes, directing and regulating the metabolism of substances "(enzyme.expasy.org/17.01.18)Say no to plagiarism. Get a Custom Essay on “Why Violent Video Games Should Not Be Banned”?Get an Original Essay The most important function of enzymes is the acceleration and initiation of biochemical reactions in the body, many, if not most of which , go only in the presence of the corresponding enzymes. The function of each enzyme is unique, that is, each enzyme activates only one biochemical process. In this regard, the body has a large number of enzymes - more than 3 thousand. Enzymes also have functions: they participate in the digestion process, help the body digest food; accelerate the process of self-purification of the body; normalize metabolism, contribute to weight loss; excrete toxins from the body; strengthen immunity; promote the renewal of body cells; convert nutrients into energy; accelerate wound healing; fight infections. Depending on the types of reactions the body catalyzes, enzymes perform various functions. Most commonly, they are divided into three main groups: food enzymes, digestive enzymes and metabolic enzymes. Digestive enzymes are released into the gastrointestinal tract, destroy nutrients and contribute to their absorption into the systemic circulation. There are three main categories of these enzymes: amylase, proteases and lipase. Amylase cleaves carbohydrates and is found in saliva, pancreatic secretions, and in intestinal contents. Different types of amylase break down different sugars. Proteases, found in gastric juice, pancreatic secretion and intestinal contents, help digest proteins. Lipase, present in gastric juice and the pancreatic secret, breaks down fats. Metabolic enzymes catalyze biochemical processes inside cells. Each organ or tissue in the body has its own network of enzymes. Food enzymes are found in foods. In particular, the need for absorption of enzymes from food that a person experiences with age, because his body's natural formation decreases over time. Keep in mind: this is just a sample. Get a personalized article from our expert writers now. Get a personalized test the most intensive enzymes work at a temperature equivalent to body temperature (around 37°C). Enzymes are destroyed at high temperatures. The same goes for cold, at low temperatures, the enzymes “go to sleep”. It is this characteristic of enzymes that is devoted to our laboratory experiment.