Bacteria is one of the species, just as with humans, however bacteria cell is different with the cells making up the human body. The human body cells are eukaryotic, where as bacteria cells are prokaryotic, the bacteria are located in different places, we can find the bacteria in the air, soil, food, water, plants, and also animals, even bacteria can be found in places that have very extreme temperatures, many people thought that the bacteria can be harmful to humans, the bacteria are harmful if destructive, but some kinds of bacteria can actually be utilized for the benefit of humans, even very beneficial to human life.
Bacteria can harmful for humans and other living things, because it can be parasites and phatogens. However, some bacteria can be utilized to produce important subtances or industrial process. Bacteria or saprophytic decomposers are bacteria that can break down plants or animals, that have died, and remains of organisms or dirt into carbon dioxide, ammonia gas, and other compounds that are simpler, these bacteria play an important role in mineralization in natural and environmental clean up of trash organic, nitrifying bacteria is bacteria that are able to prepare compounds of ammonia nitrate, which lasted aerobically in the ground, in the field of agriculture, nitrification is very benefecial, because it produces compounds needed by plants is nitrate, an example of nitrifiying bacteria is nitrobacter, nitrogen bacteria are bacteria that can fix nitrogen from the air freely, and turn it into a compounds can be absorbed by plants, the example of nitrogen bacteria is rhizobium and clostridium bacteria, intestinal bacteria serve to help decompose the residual digestion, samples of intestinal bacteria is eschericia coli or e-coli bacteria.
Bacteria also contribute to the process of fermentation in foods, such as lactobacillus bacteria which used for the manufacturer of yogurt, pickles, and kefin. Where as streptococcus is used to make butter, acetobacter in use in nata de coco and pediococcus for manufacturer of sausages, other than in the field of food, bacteria can also be used in the health sector, for example was to produce antibiotics such as the bacterium bacillus polymika.
