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1. What happens to the Hydrogen released from the Krebs Cycle?

  • It is reused in the next Krebs Cycle
  • it is used to reduce NAD and FAD, which diffuse to the inner mitochondrial membrane for the electron transport chain
  • it diffuses out of the mitochondria by lipid diffusion, into the tissue fluid and into the blood where it is carried to the lungs and removed from the body
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2. Where does the Krebs Cycle take place?

  • Mitochondrial Matrix
  • Inner Mitochondrial Membrane
  • Cytoplasm

3. Summarise the Link Reaction

  • Acetyl coenzyme A + NAD + hydrogen = pyruvate + hydrgoen + carbon dioxide
  • Pyruvate + NAD + coenyzme A = acetyl coenzyme A + NADH + Carbon dioxide
  • Pyruvate + acetyl coenzyme A + NADH = Hydrogen + coenzyme A + NAD

4. Where does the Link Reaction take place?

  • Inner Mitochondrial Membrane
  • Mitochondrial Matrix
  • Cytoplasm

5. Where does the Electron Transport Chain take place?

  • Inner Mitochondrial Membrane
  • Cytoplasm
  • Mitcohondrial Matrix


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