BIOLOGY 207 Extremophiles

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19 Terms

1
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normal growth conditions

  • pressure: sea level

  • temperature: 20 - 40 degrees celsius

  • pH: near normal

  • salt concentration: 0.9%

  • ample nutrients

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psychrophiles

0 - 20 celsius

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psychrotrophs

cold-resistant between 0 - 35 celsius

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mesophiles

15 - 45 celsius

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thermophiles

40 - 70 celsius

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hyperthermophiles

65 - 121 celsius

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barophiles

require high pressure

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barotolerant

can tolerate up to a certain pressure

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barosensitive

die with increasing pressure

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halophile

high salt

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halotolerant

can tolerate higher salt but it isn’t required

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acidophiles

pH 0 - 5

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neutralophiles

pH 6 - 8

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alkaliphiles

pH 9 - 11

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strict aerobe

only grow in O2

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microaerophile

only grow in low O2

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strict anaerobe

die in O2

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facultative anaerobe

can live with or without O2

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aerotolerant anaerobe

grow in O2 while maintaining fermentation mechanisms