Topic 12 Energy and Respiration

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Across
  1. 3. six-carbon molecule formed in the first stage of the Krebs cycle
  2. 5. an artificial hydrogen acceptor that changes colour from blue to colourless when reduced
  3. 10. removal of a carbon dioxide molecule
  4. 12. enzyme that catalyses the conversion of pyruvate to lactate
  5. 14. electron transport chain results in a high proton concentration here
  6. 16. three-carbon molecule produced in glycolysis
  7. 18. ratio of carbon dioxide produced to oxygen consumed during respiration
  8. 19. three-carbon compound formed in glycolysis
  9. 20. coenzyme that binds an acetyl group during the link reaction of aerobic respiration
Down
  1. 1. device used to determine respiration rate in living organisms by measuring the change in volume of oxygen or carbon dioxide
  2. 2. synthesis of ATP by the transfer of a phosphate group from a phosphorylated intermediate to ADP
  3. 4. enzyme found embedded in inner mitochondrial membrane with a channel for H+ ions
  4. 6. synthesis of ATP through the movement of protons down their concentration gradient across a selectively permeable membrane
  5. 7. final electron acceptor in the electron transfer chain
  6. 8. four-carbon molecule that combines with acetyl coenzyme A to produce six-carbon citrate in the first stage of the Krebs cycle
  7. 9. a series of oxidation-reduction reactions in the matrix of the mitochondria
  8. 11. synthesis of ATP from reduced coenzymes and oxygen in the electron transport chain of aerobic respiration
  9. 13. removal of a hydrogen atom
  10. 15. cellular respiration that that produces less ATP per molecule of glucose
  11. 17. membrane that provides a large surface area for oxidative phosphorylation