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Another bio lab question!

  1. Mar 11, 2008 #1
    Does anyone know why fluoride ions inhibit fermentation and why cyanide ions have no effect on fermentation?
     
  2. jcsd
  3. Mar 11, 2008 #2
    Cyanide acts upon the electron transport chain, so fermentation (which by definition does not involve vectoral metabolism via the electron transport chain) cannot possibly be affected by cyanide (assuming that the only mechanism of action of cyanide is upon the electron transport chain.)

    In contrast, it is known that fluoride inhibits glycolysis (though this is not its only effect); therefore, under the assumption that your organism is consuming glucose for its energy, fluoride would inhibit fermentation because it reduces the total capacity for energy flux.
     
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