microbiology lab report (bacteria identify )

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naan87

Science

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Indicate the type of media in plate or test tube (pictures will be included) -what happened ?

Based on change of media due to bacteria - what can you conclude?

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TABLE IX.2 Some Characteristics of Selected Bacterial Species (Continued) CHARACTERISTIC* E. coli S. B. A. C. E. M. Р. N. M. S. epidermidis subtilis faecalis freundi aerogenes luteus fluorescens subflava smegmatis marcescens Indole production + - + - 1 Urea digestion + + - + + + Lipid digestion + + -- - - * Growth characteristics on agar and broth as listed in Bergey's Manual § Gram reaction does not apply; organism is acid-fast Some strains give positive reaction; other strains give negative reaction A = acid production G = gas production Your instructor may ask you to submit a compiled lab report on the bacterial unknown at the end of this entire section. Be sure to record your findings as you complete your tests. On the Lab Report, “reaction” refers to what you observe as a result of the test. “Result" indicates whether the test gave a positive (+) or negative (-) result. TABLE IX.2 Some Characteristics of Selected Bacterial Species M. CHARACTERISTIC* E. coli S. B. A. C. E. P. N. M. S. epidermidis subtilis faecalis freundi aerogenes luteus fluorescens subflava smegmatis marcescens 37°C 37°C 37°C 25°C 37°C 37°C 25°C 25°C 37°C 37°C 25°C Temperature preference rod rod rod rod rod rod rod coccus rod coccus coccus Cell morphology single cluster Cell arrangement single single single single single single pair packet single -- con + -- + - + -- Gram reaction -- -- - -- 1 - + - -- - - Spores + + - 1 + + + + - + Motility - - - + + + +1 - -- - - Pigment formation -- A A AG AG AG A A - AG Glucose fermentation - AG - AG AG - A - - AG А Lactose fermentation + + AG AG - A A A A Sucrose fermentation A -- - - I+ AG A - AG Α. 1 + Maltose fermentation - - + + + -- + -- - + + + + + Starch digestion + - - + + - + - Catalase production -- + + - -- - - + DNA digestion - (continued) - ! - H2S production 60€
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