Are all bacteria bad?

No. Bacteria is part of our existence. We need bacteria in our daily lives.Bacteria are both harmful and useful to the environment and animals, including humans.





Being the cause of many diseases and infection is their foremost harmful effects but some bacteria also help human to avoid getting the disease- the normal flora for instance.





In soil, bacteria is very much important in nitrogenous compounds conversion known as nitrogen fixation. This serves to provide an easily absorbable form of nitrogen for many plants, which cannot fix nitrogen themselves.The ability of bacteria to degrade a variety of organic compounds is remarkable. They play important roles in the mineralization of specific classes of organic compounds as in the decomposition of cellulose.





Bacteria, often in combination with yeasts and molds, are used in the preparation of fermented foods such as cheese, pickles, soy sauce, sauerkraut, vinegar, wine, and yogurt. Using biotechnology techniques, bacteria can be bioengineered for the production of therapeutic drugs, such as insulin, or for the bioremediation of toxic wastes.





Could you imagine what will happen without bacteria? Would it be possible to live without bacteria? Though we want to get rid of those bacteria, we have to acknowledge as well that we need bacteria more than what we know.

Are all bacteria bad?
Bacteria (singular: bacterium) are a major group of living organisms. The term "bacteria" (singular: bacterium) has variously applied to all prokaryotes or to a major group of them, otherwise called the eubacteria, depending on ideas about their relationships. Here, bacteria is used specifically to refer to the eubacteria. Another major group of bacteria (used in the broadest, non-taxonomic sense) are the Archaea. The study of bacteria is known as bacteriology, a subfield of microbiology.





Bacteria are the most abundant of all organisms. They are ubiquitous in soil, water, and as symbionts of other organisms. Many pathogens are bacteria. Most are minute, usually only 0.5-5.0 μm in their longest dimension, although giant bacteria like Thiomargarita namibiensis and Epulopiscium fishelsoni may grow past 0.5 mm in size. They generally have cell walls, like plant and fungal cells, but bacterial cell walls are normally made out of peptidoglycan instead of cellulose (as in plants) or chitin (as in fungi), and are not homologous with eukaryotic cell walls. Many move around using flagella, which are different in structure from the flagella of other groups.
Reply:WELL, NOT ON PURPOSE
Reply:Nope, we have bacterias in our stomachs that we wouldn't be able to live without.





Here you have a link to a "friendly" bacteria: http://www.umm.edu/altmed/ConsSupplement...
Reply:Some are, some aren't
Reply:Hi. No, there are many beneficial ones.
Reply:ask to your body... in you lives so many bacteria and help you to digest, without you cannot live...
Reply:no but we do have Good bacteria in our bodies that help us live!
Reply:No, all bacteria are not bad. We have bacteria on and in our bodies that help to keep us healthy. Bacteria is used in aquariums to keep the water healthy for the fish ...etc...etc. Yogurt has bacteria in it. Take a micro biology class and you will find out about all the good and bad bacteria.
Reply:99.99 % of all bacteria are either non-pathogenic or actually beneficial for humans or for this earth. They help break down products so that nutrients can be extracted. Intestinal bacteria are the primary source of Vitamin K which is essential for proper blood coagulation.





Those few bad ones that get all the publicity are kinda like Rep Foley, but it should not taint the reputation of the rest of them.
Reply:Bacteria are only "bad" when they are introduced into places they are not meant to be. For example, e-coli bacteria are essential for our lower digestive tract where they live in abundance. If, however, they are introduced systemically via a bleed or absorption they can cause deadly bacterimia. They serve a purpose (or are at least harmless) in their native environments but can be dangerous when they invade non-native regions.
Reply:No. Some have a mutual relationship with us. There are those which live in our digestive tract, that aid in our digestion. (notice how some people on antibiotics get diarrhoea!) Others are found on our skin, theses act to protect our skin from other microorganisms, so called colonosation resistance. Without them our immune system would be compromised!
Reply:We would not be living on earth without bacteria. the cyanobacteria actually provided us with the oxygen we breathe. Not all bacteria are bad, hell without bacteria you would not have Bleu cheese for that Cesar salad dressing. The majority of bacterial species has yet to be discovered, heck in a scoop of soil beneath your feet there are many bacteria not discovered yet. Bacteria are good and are extremely interesting. Go and take a course in Microbiology to gain insight to them, we could not live without them.
Reply:no , all the bacteria are not bad. there are some bacteria which is usefull for the human being.


such as bassillus lactic bacteria are used in the transformation for milk to curd.


some other process of fermentation for medicinal purpose and for formation of alcohal involves the use of bacteria .
Reply:No. Only when forgien to or overgrown in the body.
Reply:Yes. If your immunity system fails all of them will try to make you sick. But without some bacteria we can't live. These bacterias live in digestive system, creating vitamin B12, changing our bile so we could absorb it... They live on us, in us. They protect our surface (skin, mucous) of getting a pathogenic bacteria. But if we get weak they will attack us. So, good and bad are relative terms in this situation.