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.
Bacteria passing resistance to a medicine on to offspring is an example of vertical gene transfer, where genetic material is transferred from parent to offspring. This mechanism allows for the inheritance of beneficial traits, helping bacteria survive in the presence of antibiotics.
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.
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.
lactobaccilus
Bacteria are prokaryotes, a type of cell that lacks a nucleus, meaning bacterial DNA are not separated from the rest of the cell as is the case in eukaryotes. Animal cells, including humans, are eukaryotes.
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.
Bacteria don't provide the service of conducting photosynthesis. Bacteria play a role in processes like nitrogen fixation, digestion in the gut, and decomposition.
Bacteria passing resistance to a medicine on to offspring is an example of vertical gene transfer, where genetic material is transferred from parent to offspring. This mechanism allows for the inheritance of beneficial traits, helping bacteria survive in the presence of antibiotics.
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.
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.
Salmonella
nitrogen fixing bacteria bacteria of decay nitrifying bacteria denitrifying bacteria
Vaccines
bacteria or decomposers
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.