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Discussion

Psychrophiles would be expected to grow:

  • A.in hot springs
  • B.on the human body
  • C.at refrigeration temperatures
  • D.at low pH 

Answer: C

Correct answer: at refrigeration temperatures

Psychrophiles are cold-loving, growing best below about 15°C and often at 0°C. Their enzymes and membranes are adapted to stay flexible in the cold, which is why they spoil refrigerated food while mesophiles cannot.

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