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I received two unknown bacteria and had to perform many tests to determine which
I received two unknown bacteria and had to perform many tests to determine which bacteria they were. My unknown #34 was Staphylococcus aureus which was gram-positive cocci and my unknown #1403 was Pseudomonas aeruginosa which was gram-negative bacillus. To start we had to perform a gram stain of both unknown bacteria to see if it was positive or negative, then for my gram-positive which was coccus, I performed a glucose, lactose, and nitrate test which all were positive. The cellular arrangement on my original culture tubes was irregular clusters and the TSA was pale to yellowish. My gram negative was bacillus so I performed a lactose test which came back negative. Then I performed a GLucode, NItrate, gelatin, sucrose, and mannitol plate test. The nitrate came back double positive and gelatin came back positive. Glucose, sucrose, and the mannitol plate were negative. which led me to the bacteria being pseudomonas aeruginosa. I will attach a picture of a lab report and how it should be written for reference.
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