MBIO 1010 Lecture Notes - Lecture 15: Mesophile, Lipid Bilayer, Hyperthermophile

• School: University of Manitoba
• Department: Microbiology
• Course: MBIO 1010
• Professor: Teresa R.De Kievit

Document Summary

If your od is higher than 2 then the sample is too dense and you have to dilute it to get back into the linear range if the cells clump then it affects the reading. 5. 11 effect of temperature on microbial growth temperature is a major environmental factor controlling microbial growth: cardinal temperatures: the minimum, optimum, and maximum temperatures at which an organism grows these cardinal temperatures are characteristic of each different organism. Temperature classes of microorganisms: microorganisms can be classified into groups by their growth temperature optima, psychrophile: low temperature, mesophile: midrange temperature, thermophile: high temperatures, hyperthermophile: very high temperature. 4 in each case the optimal temperature for metabolism function is closer to the maximum than it is to the minimum. Mesophiles: organisms that have midrange temperature optima: found in: warm blooded animals, terrestrial and aquatic environments, temperature and tropical latitudes. Extremophiles: organisms that grow under very hot or very cold conditions. Psychrophiles: organisms with cold temperature optima (<20degrees)