Microbiology lab report on Escherichia coli and Staphylococcus aureus.

Microbiology Lab ReportPractica #1BTC307LAmber AmelingmeierThursday, September 18, 2008OBJECTIVESIn this research lab experiment devil frigid types of bacteria, Escherichia coli and Staphylococcus aureus, were grown one after another and mixed on quadruple different types of nutrient nutrient agar-agar in order to come upon the vary morphologies deep hatful the colonies. Resulting data was analyzed to ply understanding of the using up of differing culture media and conditions for bacterial ontogenesis. RESULTSFour different agar types were use in this experiment. The first ( alimental) consent toed for proceeds of two E. coli and S. aureus. The second agar utilize (MKL) inhibited the produce of S. aureus unless allowed the harvest-tide of E. coli. The third (ash tree) passed step-up of both bacterial species. The quartern (mannitol) was found to inhibit growth of E. coli (Table 1). Table 1. attribute of growth deep down the four types of agar. G = growth, NG = no growth. E. coliS. aureusMixed cultureNutrientGGGMKLGNGG throwGGGmannitolNGGGChanges in colour within the sampled cultures were similarly noted. No changes occurred within the Nutrient agar. The MKL agar exhibited a warp change with E. coli and the mixed culture. The agar changed from red to purple, and a transparent border was present ring the colonies that exhibited growth on the dish. The ASH agar did not yield a color change. The Mannitol agar exhibited a change with S. aureus and the mixed culture, but no change with E. coli (Table 2). Table 2.

Indication of color change within the four types of agar. E. coliS. aureusMixed cultureNutrientTransparentTransparentTransparentMKLRed to PurpleRedRed to PurpleASHRedRedRedMannitolRedRed to YellowRed to YellowCONCLUSIONS AND DISCUSSIONTwo noticeable changes occurred during this experiment. First, two of the twelve inoculated Petri dishes yielded no growth. In order to explain these occurrences, we mustiness first examine the differing properties of the types of agar used. Nutrient agar is enriched to allow growth of a inconsiderate variety... If you want to get a full essay, order it on our website: Ordercustompaper.com

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