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Unit 3 biochem rxns

QuestionAnswer
Which species of Citrobacter is negative for indole? Citrobacter freundii
An MLS was sure she found a Citrobacter in a urine culture, but wasn't sure if it was C. freundii or C. koseri (diversus). She performed some biochemical tests and discovered it was pos for indole and ornithine, but neg for H2S. Which species was it? Citrobacter koseri (diversus)
An MLS ran some tests on a pure urine culture. They found it fermented glucose, but not lactose, was only negative for citrate and inositol, and was positive for ornithine. What species grew? Edwardsiella tarda
Joe Cool was experiencing pain and urinary frequency so his urine was collected. The bacteria recovered fermented glucose/lactose, was + for citrate, H2S, motility. It was - for indole, ornithine, lysine, inositol. MR/VP was +/-. What bacteria was found? Citrobacter fruendii
Peppermint P. thought she had a UTI so her doctor collected her urine. Her urine grew bacteria that fermented glucose/not lactose, and was - for indole, ornithine, lysine, inositol, H2S. It was + for citrate, motility, MR/VP. What was causing her UTI? Pantoea (Enterobacter) Agglomerans
Created by: laceymaej
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