The Role of Bacteria in the World

by Abhi Manivannan


Coccolithophores can be found in oceans and normally have a plate around themselves. Viruses get into them through the weak spots of their plates and head to the nucleus. At the nucleus they take over making more viruses and infecting other coccolithophores. Sometimes when they are infected the coccolithophores send messages of warning to other coccolithophores. Receiving this warning, the others will changes their platelets to impenetrable scales. If this doesn't work either, the coccolithophore will kill itself though the virus can force it to stay alive as long as needed to do damage. When a coccolithophore dies it sheds it's platelet which can build up and make formations like the Cliffs of Dover in England. These blooms can also be seen from space. Coccolithophores are responsible for half the oxygen humans breathe. When they bloom they take in carbon dioxide and as they die they release oxygen.


Referring to a number of bacteria like Lactobacilus acidophilus, L. casei, L. bulgaricus, etc. Acidophilus is important in human digestion. Placed in a sugar-rich environment, they begin to eat the sugars they find there. They then convert these sugars into various other products, including lactic acid. This leaves a distinct taste and lowers the pH of the food which helps preserve it. Acidophilus can help protect the body against harmful bacteria, parasites, and other organisms. Yogurt is the most well known food that makes use of acidophilus bacterium.


Azotobacter includes multiple bacteria like Azotobacter vinelandii, Azotobacter chroococcum, etc. It is an important part of soil. Azotobacter performs an extremely wide range of chemical transformations, including degradation of organic matter, disease suppression, disease, and nutrient transformations inside roots (like reducing bacteria in the roots).

Work Cited

Radiolab. (n.d.). Radiolab Podcast Articles. Retrieved March 28, 2014, from

Soil Bacteria. (n.d.). Soil Health -. Retrieved March 29, 2014, from

What is Acidophilus?. (n.d.). wiseGEEK. Retrieved March 29, 2014, from