Symbiosis is defined as a long-term or close relationship between two or more organisms of different species. Therefore, the relationship between E. coli (Escherichia coli) and humans can be described as mutualistic. This means that both the E. coli and its human host benefit from the bacteria residing in the intestinal tract.Continue Reading
The human body provides E. coli with a safe, enclosed, and comfortable living environment in which the bacteria receive the required nutrients for reproduction and growth, and carry out several necessary functions. E. coli, in turn, makes it possible for humans to absorb vital nutrients, including Vitamin K, through the colon. For this reason, it is considered an essential organism in the human body.
While humans and E. coli maintain a symbiotic relationship in which E. coli inhabits the gut, some strains of the bacteria, specifically E. coli O157:H7, can cause serious illness and even death when ingested. E. coli can live independently outside a host if the conditions are right, lurking in fecal matter, in warm environments or on poorly washed produce. E. coli's negative effects on humans have three main manifestations: urinary tract infections, neonatal meningitis and gastroenteritis, none of which are pleasant, and some of which can become deadly.Learn more about Biology
Escherichia coli, or E. coli, is a rod-shaped, gram-negative, facultatively anaerobic bacteria occurring naturally in the intestines of humans and most other warm-blooded animals, explains the Centers for Disease Control and Prevention. While some E. coli strains do cause illness, most are harmless.Full Answer >
Diagrams of the life cycles and reproductive methods of Escherichia coli are available on websites such as Weebly.com and BiologyDiscussion.com. E. coli is capable of reproduction by two methods; the diagram on Weebly.com depicts binary fission while BiologyDiscussion.com contains a diagram of bacterial conjugation.Full Answer >
If both organisms in a symbiotic relationship are executing an action, then one organism's actions benefit the other organism in the dynamic. The name for this type of symbiotic relationship is mutualism.Full Answer >
Colonial organisms are actually groups of individual organisms with a close, dependent relationship with other organisms in the colony, often with each member having a very specific specialization that makes them incapable of surviving alone. The individual members can be multicellular organisms or single-celled organisms.Full Answer >