Systems Microbiolo37

Systems Microbiolo37 - Systems Microbiology Cardinal...

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Systems Microbiology ° Cardinal temperatures: extremophiles o Temperature as an environmental condition – controls rate and yield o For every organism, you can determine maximum, optimum, and minimum temperatures for growth o The optimum is always closer to the maximum than it is to the minimum o Classes of organisms ° Some organisms can grow in up to 113 o C ° Organisms can grow anywhere that there’s water o Psychrophiles ° It’s very clear why organisms can’t grow at very high temperatures: proteins denature, etc. ° However, it’s less clear why they can’t grow in low temperatures: you lose hydrogen bonding, but that’s about all that changes ° True psychrophiles, that prefer very cold temperatures, are rare ° Those organisms can’t handle warmer temperatures – therefore they live only in areas where it’s cold all year round: the North and South Poles, glaciers. o
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Systems Microbiolo37 - Systems Microbiology Cardinal...

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