microbio - *Microbial Growth - the increase in number of...

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* Microbial Growth - the increase in number of cells, not cell size ------------------------------------------------------------------------------------------ * Temperature -minimum- temperature below which no growth occurs - optimum- temperature at which the bacterium grows rapidly -maximum-temperature above which no growth occurs ------------------------------------------------------------------------------------------ * pH - Most bacteria grow between pH 6.5 and 7.5 -Molds and yeasts grow between pH 5 and 6. -Acidophiles grow in acidic environments ------------------------------------------------------------------------------------------- * Osmotic pressure - hypertonic environments, increase salt or sugar, cause plasmolysis -Extreme or obligate halophiles require high osmotic pressure -Facultative halophiles tolerate high osmotic pressure ------------------------------------------------------------------------------------------- * Carbon - Structural organic molecules, energy source -chemoheterotrophs use organic carbon sources -autotrophs use CO 2 ------------------------------------------------------------------------------------------
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This note was uploaded on 06/30/2011 for the course BIOLOGY 31 taught by Professor Leaf during the Spring '11 term at Miramar College.

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microbio - *Microbial Growth - the increase in number of...

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