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Across 1. Process that supplies cells with ATP 3. The Krebs Cycle is aerobic which means it requires this. 4. Substance an enzyme acts upon 7. Last stage of cellular respiration 9. Main purpose of fermentation is to regenerate this 10. Fermentation occurs when this is not present 12. Place where the electron transport chain takes place 16. Changes in this can denature an enzyme 17. Part of cellular respiration that occurs in the cytoplasm 19. Restricted region of an enzyme that binds to the substrate 21. Cellular Respiration is this type of process

Down 2. Full name of ATP 5. Amount of ATP fermentation yields 6. Enzymes help by lowering this 8. A change in the shape of an enzyme's active site 11. Person that the Krebs Cycle is named after 13. Reduced means you are _________ electrons 14. Breaking of high energy bonds by addin water 15. Space inside the cristae is called this 18. Oxidized means you _______electrons 20. How many ATP are made in glycosis