Physical growth requirements for bacteria

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Last updated 7:17 PM on 7/4/26
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11 Terms

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Physical requirements for growth

temperature

pH

osmotic pressure

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Psychrophiles

about 15 degrees C

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Psychrotrophs

about 25 (20-30) degrees C

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Mesophiles: (where most human pathogens belong to)

about 37 (30-40) degrees C

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Thermophiles

about 65 degrees C

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Hyperthermophiles

above 80 degrees C

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pH: Bacteria

pH 6.5-7.5

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pH: Molds and yeasts

pH 5-6

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Acidophiles

grow in acidic environments

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extreme/obligate halophiles

require high osmotic pressure

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Facultative halophiles

tolerate high osmotic pressure since they’re able to adapt to environmental changes