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Across 4. Path of an electron through the thylakoid membrane 7. light trapping substance 9. metabolic pathway that reattaches carbon to make glucose 11. reaction that breaks down large molecules into smaller ones 12. area inside the thylakoid 13. particle that powers ATP synthase 15. internal membrane where ETC takes place 17. First phase of photosynthesis 18. single beam of light 19. enzyme and starting 5 carbon sugar used in the Calvin Cycle 20. CAM plant 21. waste product of photosynthesis

Down 1. area outside of the thylakoid 2. also known as Dark Reaction 3. energy molecule made in photosystem I 5. C-4 plant 6. process of attaching carbon 8. gaseous fuel for glucose 10. organelle of photosynthesis 11. specific type of pigment 14. Energy molecule that powers most cella nd body activities 16. reaction that combines small molecules to make larger molecules