______________ are organic compounds that are required by a cell in very small amounts.

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     Growth factors
      Macronutrients
      Picanutrients
      Micronutrients
      More than one of the above
asked May 16, 2012 in Microbiology by anonymous
    

1 Answer

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Growth factors
answered May 17, 2012 by Bioshare ~Top Expert~ (34,070 points)

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