Commonalities and Basics
Bacteria have a cell wall, cell membrane and cytoplasm, and DNA is stored in the nucloid region. Bacteria require a food source for energy, and they have the ability to reproduce. Although most people try to avoid germs, not all bacteria are bad. Many types of bacteria are not only beneficial but also necessary—even certain bacteria with a bad reputation, according to Miller1.
For example, E. coli normally lives in the intestines of humans and animals, and it has an important role in the digestion process. As long as E. coli stays in its proper environment, all is well. E. coli can cause serious health problems, though, if it gets into the blood of an individual. E. coli infected many people in 2006 when it was found in fresh spinach sold at grocers, according to the Kidshealth2 website.
It has also gotten into hamburger meat, on numerous occasions, via infected cattle, which is why it’s a good idea to make sure your hamburgers and other beef dishes are cooked well-done when eating at home or at restaurants, says FamilyDoctor.org3.
Nevertheless, some bacteria are good for you, such as the bacteria in yogurt—lactic acid bacteria. Bacteria are also used to age expensive, tasty cheeses.