Campbell Biology in Focus, Books a la Carte Edition; Modified Mastering Biology with Pearson eText - ValuePack Access Card - for Campbell Biology in Focus (2nd Edition)
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Chapter 6, Problem 5TYU

Some bacteria are metabolically active in hot springs because

  1. A.    they are able to maintain a lower internal temperature.
  2. B.     high temperatures make catalysis unnecessary.
  3. C.     their enzymes have high optimal temperatures.
  4. D.    their enzymes are completely insensitive to temperature.
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