What are bacteria?

Bacteria are tiny single-celled organisms, primitive nuclei, we deal with them daily without seeing them, they cause diseases for humans, and enter into various fermentation processes as well. (Pasteur), the first scientist to discover the existence of bacteria, a French nationality, (chemical world). He discovered through his experiments (aerobic bacteria) and (anaerobic bacteria).

And (Robert Koch) the German scientist, contributed to the discovery of bacteria and its relationship with the disease and its association with it, and was the first cottage of the work of pure farms only for bacteria.

In addition, bacteria cause diseases to humans, but it has been shown that bacteria enter and contribute to many food industries, and enter into the pharmaceutical industry as well. It also helps bacteria to get rid of organic substances and inorganic substances. Bacteria are used to treat wastewater to be used in the production of methane, and are also used in energy production.

Bacteria have : a spherical shape, a bacterium, a bacterium and a spiral shape.

There are self-feeding bacteria, ie, they provide food for themselves, including two types: self-feeding bacteria, which are used in the manufacture of their food (solar energy), and the other type is the chemical self-feeding bacteria, which use chemical energy to provide the cancellation itself .). There are bacteria that are not self-feeding, those that depend on others in their diet. And Ttakashr bacteria in the water, and increases its activity in the sun's rays, and as bacteria grow in the middle neutral (PH), and there are some of them grow in an acid environment as well.

...The bacteria has three types...

1. Aerobic Bacteria: They need oxygen to produce energy.
2. Aerobic bacteria: oxygen is toxic to them.
3. Optional aerobic bacteria: These bacteria can live in the presence of the prison and not.

Food is a suitable breeding environment for bacteria. Bacteria cause food poisoning, bacteria enter the dairy industry, butter industries, cheeses, and pickle industries.

Some types of bacteria live in human intestines, animal intestines, help digest cellulose, and in the digestion of fatty substances (some)