All the bacteria belonging to monera king dom are considered as true bacteria. Archae bacteria,eu bacteria,cyano bacteria,micoplasmas,actino mycetes,rickketsia e.t.c belong to true bacteria. Example:nostoc,streptococcus pneumonae e.t.c. read more
So instead of giving you a few examples of bacteria - I’ll give you examples of bacteria genera and known pathogens belonging to them: in the genus Escherichia we find the famous E. coli in the genus Yersinia we find Y. pestis - the cause for plague and black-death. read more
The common varieties of bacteria that are useful to humans include various types of antibiotics. Some bacterias that live in human intestine help in digestion. Other bacteria in human intestine produce some vitamins. The process of fermentation used for wine making, cheese processing, and many other food, relies on use of specific bacteria. read more
An example of a bacterial disease is tetanus cough. One other example is whooping cough. One of the most common examples of bacteria is E. coli. This bacterium has long been recognized as the "average" bacterium, and is used as a baseline in many genetic engineering experiments. read more