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Other Environmental Factors Effect Microbial Growth, Osmolarity (Water…
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Osmolarity
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Water availability: The vapor pressure of air in equilibrium within solution = vapor pressure of pure water
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if low water activity in the surrounding the microbe will increasing internal solute concentration by:
1) pumping inorganic ion
2)synthesize organic solute
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Oxygen
Toxic form of oxygen in the cell; single oxygen, superoxide anion, hydrogen peroxide, hydroxyl radical
Enzyme to neutraliza toxic; catalase, peroxidase, superoxide dismutase, superoxide reductase
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