Temperature effects on the growth of microorganisms
Introduction:
The purpose of this experiment was to determine the effects that temperature has on three different organisms. Temperature is one of the most important environmental factors affecting growth and survival of microorganisms². The three organisms used where Escherichia coli, Pseudomonas fluorescens, and Bacillus stearothermophilis. Most bacteria grow within a particular temperature range. The minimum growth temperature is the lowest temperature at which a bacterium can still grow, while the maximum growth temperature is the highest temperature at which a particular bacterium can still grow. The optimum growth temperature is the temperature at which the bacterium can grow at the highest rate¹. The lab group hypothesized that B. stearothermophilis would only grow at 47° C. That E. coli would grow above 13° C but stop growing above 45° C and P. fluorescens would also grow between the temperatures of......
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