Question

Пересказ про what are bacteria

Answer 1

Bacteria are microscopic, mostly unicellular organisms characterised by the presence of a cell wall, cytoplasm, various inclusions, the absence of a nucleus, mitochondria, plastids and other organelles. The importance of bacteria in natureBacteria are an important link in trophic food chains, they act as reductants, decomposing the remains of dead animals and plants, thereby cleaning the Earth. Many bacteria play the role of symbionts in mammals and help them break down fibre that they cannot digest. Bacteria come either from the environment, in which case they are brought into the apartment by air currents, or they are brought in by people and animals. Among the microbes, there may be those that cause illness and the appearance of mould, which causes allergies. A healthy person's body contains 10 times more bacterial cells than their own cells. The majority of bacteria are found on the skin and in the digestive tract, with 10 times more bacteria per unit area in the intestines than on the skin