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BIMM 120 CH 5
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Normal growth conditions for microbes (pressure, temp, pH)
sea-level
20-40C
neutral pH
T/F - bacteria have the same temp as their environment
True
False
true
T/F - microbes that grow in higher temp typically have lower growth rates
True
False
false
Growth rate ___ for every ___ rise in temp
doubles; 10C
order from lowest temp loving to highest temp loving
psychrophiles, mesophiles, thermophiles, hyperthermophiles
What do chaperones do during temp change?
maintain the shape of the proteins
organisms that grow under high pressure
barophiles/piezophiles
water activity for most bacteria
>0.91
microbes that require high salt concentrations
halophiles
classes of organisms differentiated by pH growth range
acidophiles (0-5)
neutrophiles (5-8)
alkaliphiles (9-11)
converts superoxide radical to hydrogen peroxide
superoxide dismutase
converts hydrogen peroxide to water and oxygen
catalase
converts hydrogen peroxide to water and NAD+
peroxidase
infusion of a limiting nutrient and what it can lead to
eutrophication; blooms
D-value
length of time it takes to kill 90% of population
D. radiodurans
can survive high radiation
can repair radiation damaged DNA
bacteriostatic vs. bactericidal
stops growth vs kills
common antibiotic targets
peptidoglycan
cell membrane
protein synthesis
DNA replication
phage therapy
treats bacterial diseases with a virus targeted to the pathogen
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Author
andrewlee22087
ID
317078
Card Set
BIMM 120 CH 5
Description
bacteriology
Updated
2016-03-09T06:17:18Z
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