SDSU Psychrophiles Mesophiles and Thermophiles Study Guide Questions
Description
1. Compare and contrast psychrophiles, mesophiles and thermophiles
2. What is the difference between the minimum growth temperature, maximum growth
temperature and optimum growth temperature? Draw a graph that represents each of them
for a psychrophile, mesophile and thermophile.
3. What are the four major elements that are required for microbial growth? Briefly describe why
each of them is required.
4. Describe the five categories of organisms in terms of oxygen requirements (i.e. obligate
aerobe, obligate anaerobe, etc.)
5. What criteria must culture media meet to make them appropriate for growing
microorganisms?
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