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