Humans have E.coli in our intestines to help us form certain vitamins. Our skin has normal flora on it that outcompete the "bad" bacteria. Plants need bacteria to fix nitrogen for them. There are many examples.
One of the example is the GUT FLORA. It is needed of our body to break down food remains that have not been digested earlier in the digestive system and to discourage harmful bacteria and yeasts from invading the body. It also produces beneficial substances like vitamin K.Another one is Lactobacillus acidophilus, which is a bacterium that turns milk into yogurt.
The bacteria in the intestines is beneficial. Acidophillus bacteria as in Yogurt is also beneficial . Lactobacillus is used commercially in dairy industry widely. Escherichia coli, an intestinal bacteria helps in digestion and absorption of food . Staphylococcus aurous, a bacteria present on our skin, aids it in immunity. It prevents the invasion of foreign microorganisms by releasing certain toxins.
lactobaccilus
It is bacteria. Bacteria can be bad. It is sometimes beneficial but most people probably just think of it as bad.
Bacteria in the large intestine can produce important vitamins for the body. For example, some bacteria produce vitamin K from eating fiber. Some bacteria also produce vitamin D.
broremediation
Most bacteria are harmless, in fact a lot is beneficial. However, several are pathogenic, meaning they can cause infection. For example, Tuberculosis is caused by bacterium.
Some bacteria are beneficial to their hosts.
Fungus
Bacteria in the large intestine can produce important vitamins for the body. For example, some bacteria produce vitamin K from eating fiber. Some bacteria also produce vitamin D.
Salmonella
One of the example is the GUT FLORA. It is needed of our body to break down food remains that have not been digested earlier in the digestive system and to discourage harmful bacteria and yeasts from invading the body. It also produces beneficial substances like vitamin K.Another one is Lactobacillus acidophilus, which is a bacterium that turns milk into yogurt.
nitrogen fixing bacteria bacteria of decay nitrifying bacteria denitrifying bacteria
Vaccines
bacteria or decomposers
Some bacteria are beneficial to humans, and some bacteria are harmful to humans.
Most bacteria are either harmless or beneficial to humans, but there are some that can cause harm. Many bacteria are able to cause disease and even death. For example, Clostridium botulinum can cause food poisoning that is sometimes fatal.