Today we applied five different antibiotics to a spread plate of our unknown H bacteria. We used all four from the first picture and we choose to do Penicillin as our fifth one. We are trying to see if our bacteria is resistant to any of them. making the plate is actually pretty fun. :)
All the antibiotics are on small pads that we place on the spread plate in different quadrants so that we know which antibiotics work and which ones don't.
As an extension from last Thursday we swabbed the same cell phone and tested to see if 70% alcohol would inhibit the growth of the bacteria better then the 68% alcohol. Well, as usual with all our tests it was uninteresting and neither the 68% or the 70% worked against the growth of the bacteria.
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| 70% is on the bottom half and 60% is on the top |
Also at the end of class Dr. P. showed us how to make yogurt! First, he filled two cups with milk. Then in one he put a small spoonful of greek yogurt. In the second cup he first heated it up, let it cool down and then added the yogurt. He then put it in a small incubator and we will see the result next class.
We are nearing the end so the pressure is on to figure out what our unknown bacteria is! Maybe we can do it Thursday.
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