Bacteria cultivation

When we grow bacteria, a growth environment called a medium is used. The organisms that grow in or on this medium form a culture. A culture is considered a pure culture when only one type of organism lives there. It is considered a mixed culture when populations of different organisms are present. When first used, the culture medium should be sterile, meaning that no form of life is present before inoculation with the microorganism.

We are going to cultivate the bacteria E. coli that is the one that is easier to cultivate in the school lab.

E. coli or escherichia coli is a bacteria that lives normally in the intestines of people and animals. Normally this bacteria is harmless and actually helps to keep our health in a good state but, sometimes it has mutations that can afect us seriously.