Saturday, February 2, 2013

Science- Bacteria

Clothing, food, tables, chairs, air, gas, cars, books, glasses, shoes, floor, lips, arms, and much much more.
All of these things contain bacteria, and some bacteria may be harmful. How do we attack back bacteria? well we use antibiotics, and antibacterial. But are these things causing more damage or are they helping us?

Have you ever seen those weird pills on commercials  have you ever noticed that the side effects they cause are worse than what they cure? Well when it comes to antibacterial soap and other things its just the same. While antibacterial soap may kill off some bacteria that you have on your hands they can also cause dry and irritated skin, and some people are allergic to the high level of alcohol that they contain. In some cases the person using these products may even become dependent on them, sort of like a psycological addiction.


But can we kill off all type of bacteria? To know that answer we would have to see what are the types of bacteria. The three main types are, cocci, some of the smallest, and simplest, and many causing diseases such as food poisoning, meningitis, skin disorders such as spots and boils, and lower respiratory tract infections. then there is Bacillus, larger and more complex, and capable of forming spores, there are also forms of Bacilli that will cause diseases such as, bubonic, pneumonic and sceptacaemic plague, and anthrax. This type of bacteria is also responsible for causing milk and other dairy to spoil. The third main type of bacteria is Spirochetea, generally found in stagnant water, or water that has been contaminated by sewage, and can cause diseases such as cholera, and lyme disease. 

That said i think i should also mention what i like to call the extreme bacteria, the archaebacteria. Some good examples of these are the Thermophiles which are bacteria that live in extremely hot places such as hot springs. So if you thought that with a little bit of hot water you could kill them you are wrong, the word phile comes from "lover of" so please skip the hot water if you think you can kill them like that. All you would be doing them is giving them a perfect home. 

Other very extreme bacteria would be Acidophiles, lets remember what i said in the last paragraph phile comes from "lover of". And these types of bacteria live in places with very low pH like below 7 (pH below 7). A good example of their dream house would be the stomach which has generally a pH of 2-3, remember anywwhere with a pH below 7.

You now know of those extreme bacteria, but what happened to bacteria that love salty places? Those are the Halophiles , the saline content in which theses bacteria live is ten time more of a normal ocean water. This means that places like the Dead Sea is a very good place for them to live. So how many bacteria do we kill with the use of soap? i leave that answer to you. 

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