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Enviro requirements

atmospheric, temp, pH, metabolic

QuestionAnswer
require O2 and have a respiratory metabolism obligate aerobes
number of ATP produced in a respiratiory metabolism by 1 molecule of glucose 36 ATP
require O2-free conditions obligate anareobes
metabolism of obligate anaerobes fermentative
number of ATP produced in fermentative metabolism by 1 molecule of glucose 2 ATP
products of fermentative metabolism short chain fatty acids gas products
the terminal e- acceptor in respirative metabolism O2
the terminal e- acceptor in fermentative metabolism organic/inorganic compounds
can utilize either type of metabolism facultative anaerobes
need 8-10% CO2 in atmosphere canophilic bacteria
need 3-5% less O2 than is in atmosphere microaerophilic bacteria
Temperature range for mesophilic bacteria 25-40C
Bacteria that prefer 25-40C mesophilic
Bacteria that prefer <20C psychophilic
Bacteria that prefer 55-80C thermophilic
Temperature range for thermophilic bacteria 55-80C
preferred pH of pathogenic bacteria 7.2-7.4
can't metabolize carbs or glucose asaccharolytic
can metabolize carbs and glucose saccharolytic
Bacterial growth phase during which cells increase on size and metabolic activity, but show no detectable proliferation lag phase
Bacterial growth phase during which cells divide and a linear relationship between log(# of cells) and time is observed logarithmic phase
Bacterial growth phase during which call division decreases and finally stops stationary phase
Bacterial growth phase during which the viable cell count decreases decline phase
Created by: jesters
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