Describe the relationship between free ribosomes and membr…

  Describe the relationship between free ribosomes and membrane-bound ribosomes. Be sure to include in your answer (1) where each type is located in a eukaryotic cell, (2) whether the two types form separate populations or constitute a single population, and (3) how the two types are kept separate or exchanged with one another, as appropriate.  

  The citric acid cycle generates NADH and FADH2, which are…

  The citric acid cycle generates NADH and FADH2, which are then used in the process of oxidative phosphorylation to make ATP. The reactions in the citric acid cycle do not utilize oxygen. Yet the citric acid cycle stops almost immediately when O2 is removed. Explain this observation.