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Across 1. what is left after NAD+ picks up two electrons and one hydrogen ion 5. essential for life 8. proteins used as catalysts 10. the most harmful environmental condition to enzymes 12. simple sugars 13. double sugars 14. the most abundant organic compound on earth 15. the region where a molecule binds to an enzyme 17. this means it doesn't use oxygen 18. the process where ATP is remade 19. Used to regenerate NAD+ For glycolysis 20. chemicals that resemble an enzymes normal substrate and compete for the active site

Down 2. adrenosine triphosphate 3. The process where the phosphate bonds are broken by adding one water molecule 4. built of monomers 6. where the Krebs cycle takes place 7. removing a water molecule to join two monosaccharides 9. when ATP is made in your body 11. a stage of cellular respiration done in the cytoplasm 16. carries electrons and is a coenzyme