I. Cellular Respiration
   I. Cellular Respiration
   A.  Purpose:
   A.  Purpose:
      1.  Energy is extracted from 
      1.  Energy is extracted from 
    glucose, as it is broken down into 
    glucose, as it is broken down into 
    simpler compounds.
    simpler compounds.
      2.  This energy is stored as a 
      2.  This energy is stored as a 
    high energy molecule called ATP.
    high energy molecule called ATP.
    II. Anaerobic 
    II. Anaerobic 
    Respiration
    Respiration
    A: Description: occurs in the 
    A: Description: occurs in the 
     absence of “free” oxygen.
     absence of “free” oxygen.
      II. Anaerobic 
      II. Anaerobic 
      Respiration
      Respiration
      C.  Results of Anaerobic 
      C.  Results of Anaerobic 
       Respiration:
       Respiration:
        net gain of 2 molecules of ATP 
        net gain of 2 molecules of ATP 
       per glucose molecule taken apart.
       per glucose molecule taken apart.
         In humans anaerobic 
          In humans anaerobic 
       respiration is the first step in a 
       respiration is the first step in a 
       two step process.
       two step process.
      II. Anaerobic 
      II. Anaerobic 
      Respiration
      Respiration
       In other organisms, anaerobic 
        In other organisms, anaerobic 
        respiration is their only method of 
        respiration is their only method of 
        making energy.
        making energy.
       Waste products made include 
        Waste products made include 
        alcohol and lactic acid. 
        alcohol and lactic acid. 
        (Fermentation)
        (Fermentation)
      III.  Aerobic 
      III.  Aerobic 
      Respiration
      Respiration
       A.  Definition-
       A.  Definition-
       results in the net synthesis of 36 
       results in the net synthesis of 36 
       ATP molecules.
       ATP molecules.