The Role of Bacteria in the World

The Bacteria that is Necessary for Our Lives

A War We Need

How Do These Bacteria Fight Off Viruses?

Coccolithophorids fight for their lives against a diamond shaped virus. The virus hijacks the nucleus and the other cellular machinery once it is inside the coccolithophorid. Now, there are more diamond shaped viruses that are multiplying and taking up space. Then, a steady stream of viruses escape the coccolithophorid and continues the cycle of infecting others. Although many fail to survive, there are still ways that they fight the virus off. For example, at certain times, when the virus enters the coccolithophorid, it sends chemical signals to "warn" the others around it. As a result, as more become infected, the stronger the signal becomes. When one receives the message, it changes its DNA which results in the the white shields to change into scales. The scales became an adaptation against the virus. At other times, the cell kills itself instead. However, the virus has found out how to prevent the cell from killing itself. This "battle" has been taking place throughout all of the surface of the oceans, where several coccolithophore have been killed.

Why Is the "War" So Important?

If this war never existed, all humans alive today would cease to exist. These battles against the coccolithophore and the viruses are responsible for half the oxygen we breathe. The phytoplankton that go through these battles take in carbon dioxide, then exert a puff of oxygen. Without this battle that provides oxygen, humans and other organisms would not be able to live.

Bacteria on the Skin

The skin of organisms is home to several types of bacteria, but one type of bacteria specifically, Staphylococcus epidermidis, has an important role to benefit the body. These bacteria are harmless and they thrive on the skin. Studies have shown that these bacteria has an important role to benefit the immune system that fights off diseases. As there are several other types of bacteria existing on the skin, they have other roles that benefit other bodily systems. For example, some bacteria on the skin aid the body's digestive system and growth. In addition, the Staphylococcus epidermidis on the skin help maintain the health of the body by preventing inflammation.

Escherichia coli

Escherichia coli is a type of bacteria that is found in the lower intestines warm blooded organisms, making up about 0.1% of gut flora. These bacteria are typically harmless, but they aid the digestion of the body. Escherichia coli has a role of aiding the digestion in its environment by synthesizing vitamin K2. Within its environment, it also has a role of prevent unfavorable and poentially hostile bacteria in the body. This bacteria has another role that contributes to biotechnology. When utilized in genetic technology, it aids the body in repairing damaged genes. Therefore, this type of bacteria has important roles in its environment of the intestines and in the concept of biotechnology.