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Across 4. set of reactions in photosynthesis in which simple sugars are formed from carbon dioxide using ATP and hydrogen from the light reactions 9. process to obtain energy and produce food from inorganic compounds rather than from sunlight 12. splitting of water molecules during photosynthesis 14. anaerobic process in which lactic acid is produced 15. molecule that results from breaking off the third phosphate group of ATP

Down 1. series of molecules along which electrons are transferred; as the electrons travel they release energy 2. process in which cells break down molecules of food to release energy 3. anaerobic process in which ethyl alcohol and carbon dioxide are produced 5. cyclic series of chemical reactions that take place during aerobic respiration; produces ATP and releases electrons 6. process by which autotrophs produce simple sugars from water and carbon dioxide using energy absorbed from sunlight by chlorophyll 7. oxygen-requiring biological processes 8. energy-storing molecule that serves as the cell's "energy currency" 10. simple biological processes that do not require oxygen 11. highly complex reactions by which light energy is converted to chemical energy during photosynthesis; results in the splittin gof water and release of oxygen 13. anaerobic process that splits glucose