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14 Cards in this Set

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Acidophile
A microorganism that has its growth optimum between about pH 0 and 5.5
Aerobe
An organism that grows in the presence of atmospheric oxygen
Aerotolerant Anaerobe
An organism that grows equally well whether or not oxygen is present
Alkalophile
A microorganism that grows best at pHs from about 8.5 to 11.5
Anaerobe
An organism that grows in the absence of free oxygen
Balanced Growth
Microbial growth in which all cellular components are synthesized at constant rates relative to each other
Barophilic (Barophile)
Organisms that prefer or require high pressures for growth and reproduction
Barotolerant
Organisms that can grow and reproduce at high pressures but do not require them
Batch Culture
A culture of microorgs produced by inoculating a closed culture vessel containing a single batch of medium
Cardinal Temperatures
Minimum, Optimum, and Maximum growth temps
Chemostat
A continuous culture apparatus that feeds medium into the culture vessel at the same rate as medium containing microorgs is removed; the medium in a chemostat contains one essential nurtrient in a limiting quantity
Coenocytic
Refers to a multinucleate cell or hypha formed by repeated nuclear divisions not accompanied by cell divisions
Colony Forming Units (CFU)
The number of microorgs that form colonies when cultured using spread plate or pour plates; an indication of the number of viable microorgs in a sample
Compatible Solutes
Solutes that are compatible with metabolism and growth when at high intracellular concentrations