A Lab Experiment on the Bacteria, Staphylococcus epidermidis

A Lab Experiment on the Bacteria, Staphylococcus epidermidis

Lab Practical: Staphylococcus epidermidis


can be found in everyday society around the globe. Although one cannot

see them with the naked eyesight, they do exist and also have been around

for an incredible number of years. Some are beneficial, while some cause major

epidemics. For example, Saccharomyces


is a kind of yeast found in bread, beer, and several other food products.

While it could be harmless, other styles of microbes aren't as

forgiving. For instance, Plasmodium

is an associate of the Kingdom Protista and can be the key culprit behind

malaria, a mosquito-borne disease which in turn causes flu-like symptoms and

even death if kept untreated. Probing concerns and labwork help

determine which bacteria are advantageous and which are harmful.


a series of tests, an unknown bacterium had received to each

student to look for the genus in addition to the specifications of the

bacteria. These tests became enough enough in determining

the unidentified bacteria through an activity called differential staining.

Gram staining, produced by Christian Gram helped to differentiate

the bacteria predicated on the existence of some or few layers of

peptidoglycan, one of the key pieces of a bacteria's cell wall structure.

If the bacteria made an appearance purple within the compound microscope,

it had been considered Gram positive as the primary stain, crystal

violet, was absorbed showing the cell contained various layers of

peptidoglycan. Even so, if the specimen made an appearance pink or red, it had been

Gram negative since it absorbed the counterstain, safranin thus

indicating it experienced few layers of peptidoglycan present. Another test

called an


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