Compared with what, I feel more about bacteria?

There are many kinds of bacteria and viruses, most of which are harmless to the body, and a few will cause disease. Their pathogenic principles are complex and diverse.

Introduction of bacteria

There are many good people in bacteria, among which saprophyte is an important decomposer in the ecosystem, which can make the carbon cycle go smoothly. Some bacteria can fix nitrogen and transform nitrogen into a form that can be used by organisms. The production of cheese, yogurt and fermented grains, the manufacture of some antibiotics and the treatment of wastewater are all related to bacteria.

Bacteria are also widely used in the field of biotechnology. Of course, the bad guys in bacteria are many pathogenic bacteria, including tuberculosis, anthrax, plague and other diseases are caused by bacteria. The relationship between bacteria and human body is mainly parasitic. Let's talk mainly about pathogenic bacteria. Because most bacteria have their own metabolic system, bacteria can parasitize between normal cells of human body after invading human body.

Bacteria rob the body of essential nutrients, and the growth of bacteria produces various metabolites, which disrupts the physiological balance of the body. Even the size of bacteria has become a pathogenic factor, interfering with and destroying the function of cells. Therefore, in some diseases, only the reproduction of bacteria has fatal consequences.