1. First of all, you must know what an enzyme is. In fact, enzyme is another name for enzyme. It should be noted here that the activity of biological enzyme must be reflected by active protein! The activity of enzyme protein is very dependent on the surrounding environment, even some special activating substances.
2. If people want to eat, people can eat meat. The main ingredient of meat is protein, but protein can't be absorbed directly. It must be hydrolyzed into small amino acids to be absorbed into the blood by small intestinal cells and then contribute to your life. Trypsin is the most important enzyme to decompose protein.
3. But our own digestive organs are also made of protein, and protein is also a kind of meat. Why can't we be digested by this enzyme? Because when they are in the pancreas, they are only trypsinogens and have no digestive activity. Only when it is mixed with chyme and activated by enterokinase in it can it be activated into trypsin which can decompose protein. Moreover, trypsin has high requirements on the surrounding pH value. If it's too acidic, it won't work. If it's too alkaline, it will die directly. Only when various conditions are met can food be digested.
Extended data:
Enzyme is a kind of protein or RNA produced by living cells, which has high specificity and high catalytic efficiency for its substrate. ?
Enzyme is an extremely important biocatalyst. Due to the action of enzymes, chemical reactions in organisms can be carried out efficiently and specifically under extremely mild conditions.
With the deepening and development of people's research on the molecular structure and function of enzymes and the kinetics of enzymatic reactions, the discipline of enzymology has gradually formed. ?
The chemical essence of enzymes is protein or RNA (protein), so they also have primary, secondary, tertiary and even quaternary structures. According to the different molecular composition, it can be divided into simple enzymes and binding enzymes.
Only those containing protein are called simple enzymes; Binding enzyme consists of enzyme protein and cofactor. For example, most hydrolases consist only of protein; Flavin mononucleotide enzyme consists of enzyme protein and cofactor. The protein part of the enzyme protein and the non-protein part of the cofactor in the combined enzyme have catalytic activity only when they are combined into a complete enzyme. ?
References:
Baidu Encyclopedia: Enzyme