17b+17d+followup+10+16+sum08

17b+17d+followup+10+16+sum08 - #15 Pop Counts If you werent...

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#15 Pop Counts If you weren’t able to determine cfu/ml on Thurs, get plates from incubator room and complete exp 15 today. Write results on board # colonies on countable plate x dilution factor of that plate = cfu/ml
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Follow-up #10 Pure Culture? Last class- observed cell morphology Today- Look carefully at colony morphology on streak plate. How may colony types? Answer questions pg 44.
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#16 MPN day 3 Examine BGLB broth- bubble in Durham tube is positive for coliforms Examine EMB plate- dark colored colonies indicate lactose fermenters Be sure you can identify E. coli , Enterobacter aerogenes , and Pseudomonas sp- non-lactose fermenters Complete pg 85
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E. aerogenes E. coli
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#20 Part B- effect of pH on microbial growth Acidophiles- grow best at pH <6 (yeasts, molds) Neutrophiles- grow best at pH close to 7 (most bacteria) Alkalinophiles- grow best at pH >7 Purpose of exp- to determine optimum pH and pH range for 3 organisms
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Procedure : Everyone gets 3 tubes of pH broth you are
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This note was uploaded on 10/01/2008 for the course BIOL 2051 taught by Professor Brininstool during the Summer '07 term at LSU.

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17b+17d+followup+10+16+sum08 - #15 Pop Counts If you werent...

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