Bacteria PNG

Bacteria PNG

Bacteria are another name for members of the unicellular family of microorganisms. Members of this group are usually a few microns in average. These cells, called bacteria, are sometimes beneficial to our body, sometimes harmful and sometimes ineffective. At the same time, the presence of certain types of bacteria can affect other bacteria, which play an important role in the pursuit of antibiotics. In short, the presence of certain bacteria will lead to a decrease in other bacteria. The purpose of antibiotics is to remove harmful bacteria from the body in this way or to reduce the number of harmful bacteria.

Bacteria with a prokaryotic structure differ from other microorganisms with these features. Its DNA can be found in the nucleoid, which has a filamentous structure, or in plasmids, which have a circular structure.

They do not have a membrane-covered nucleus. In addition, the cytoplasm of bacteria lacks endoplasmic reticulum, Golgi apparatus, and mitochondria. Bacterial cells usually have two protective layers; cell wall and cell membrane.

Some bacteria, such as mycoplasmas, do not have a cell wall. Some bacteria may even have a third layer called the capsule. They have whip-like appendages on their outer surfaces. These appendages allow bacteria to move and attach to a host.