Biology+Expectation

=Hypothesis=

If the bacteria from human skin is soaked into swimming pool water for one hour, then there won't be much of //Staphylococcus epidermidis// existing afterwards because chlorinating agents that sanitize the swimming pool water will kill //Staphyloccoccus epidermidis//.

=Background Knowledge=

Staphylococcus epidermidis is a coccus bacterium. Under a microscope, they look like grapes clustered in pairs. They usually come in bunches or in short chains (see diagram 1). media type="custom" key="209763" (Diagram 1) [|Source]

media type="custom" key="209857" (Diagram 2) This is a picture of the bacteria growth of Staphylococcus epidermidis. [|Source]

Staphylococcus epidermidis is a very common type of bacteria found on human skin. Most Staphylococcus epidermidis are nonpathogenic, not only that, it protects human bodies too. It is beneficial to human bodies because it is spread all over the human skin and thus prevent other bacteria from entering human skin. However, in special cases like in hospitals, Staphylococcus epidermidis is dangerous and pathogenic. Diagram 3 and 4 are pictures of people with Staphylococcus epidermidis disease.

media type="custom" key="209835" (Diagram 3) [|Source]

media type="custom" key="209833" (Diagram 4) [|Source]

Background Knowledge Source: [|Ken Todar's Microbial World]