The importance of different types of bacteria.

Single-celled organisms are found everywhere: in water, soil, on and inside other organisms. Bacteria are an integral part of human and animal life. Symbiotic bacteria are beneficial in their environment. For example, E. coli – interferes with the activity of other bacteria. For cattle, bacteria in the intestines digest fiber. Pathogenic bacteria are a source of infectious diseases (cholera, diphtheria, dysentery, tuberculosis). A person uses the positive properties of bacteria in his activities. The ability to ferment, is applicable in the food industry for fermented milk products, in pharmaceuticals – for the production of antibiotics, in agriculture – for silage of fodder. Bacteria break down organic residues – used to purify water. Bacteria are beneficial, but they can also produce poisons that are dangerous to animals.