BIOL 2051 Chapter : Chapter 5
Document Summary
Chapter 5 - environmental influences and control of microbial growth. Environmental factors that affect microbial growth: temperature, pressure, osmolarity, ph, oxygen. Temperature is a major environmental factor controlling microbial growth. ___________________ temperatures- minimum, optimum, & maximum temps for an organism. ____________________ temperature - cellular processes _____________; cytoplasmic membranes stiffen. ____________________ temperature- organism grows best; between min & max: microorganisms can be grouped by the temperature ranges they require, cold: o c 20 c, 20 c 45 c, 40 c 80 c. Example: chlamydomonas: molecular adaptations of psychrophiles, membranes have. _________________ can be used to preserve microbial cultures at ___________ _______________ (dimethylsulfoxide) & ___________________ are commonly used in laboratories to preserve microbial cultures for long time in freezers: mesophiles- Found in ____________________________ & many terrestrial & aquatic environments. Examples- most organisms you are familiar with such as escherichia coli (found in the. Some ____________ have been found growing at temps above: places thermophiles are found: soils subjected to.
