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Across 3. gas from the atmosphere that combines with the 5-C sugar in the first part of the dark reaction 4. another name for a heterotroph 5. the main energy storing product from dark reaction 6. substance that absorbs certain wavelengths of light 9. how do the hydrogen ions move through ATP synthase 11. process by which some organisms use sunlight, carbon dioxide, and water to make glucose and oxygen 13. what does the protein pump, pump into the inside of the thylakoid membrane to create a concentration gradient 14. one of the products of the light reaction used in the dark reaction 15. organelle that PS takes place in 18. after the 6C sugar in the dark reaction splits into 2 3C compounds, electrons are added from a molecule of ____ 19. this molecule is added to ADP to form ATP 23. flat, disc-like sacs in the chloroplast 25. another name for an autotroph 27. pores in the leaf that allow gases in and out 28. a stack of thylakoids 29. organisms that can do photosynthesis 31. the molecule that splits to replace the electrons that leave the chlorophyll after they become excited 32. energy in ATP is found in the bonds between these molecules

Down 1. all living things need energy to maintain this 2. process by which cells produce energy from carbohydrates 7. in the second ETC, electrons and H+ and NADP+ are combined to form this molecule 8. another name for the dark reaction 10. the electrons that absorb energy from the sun are found in this molecule 12. one of the products of the light reaction used in the dark reaction 16. organisms that cannot make their own food 17. the part of water that is released into the atmosphere 20. space inside the chloroplast 21. breaking down organic molecules 22. this is where the dark reaction occurs 24. building organic molecules 26. after the 6C sugar in the dark reaction splits into 2 3C compounds, a phosphate is added that comes from a molecule of ___ 30. the ultimate source of energy