Photosynthesis

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Across 1. first step in releasing the energy of glucose, i which a molecule of glucose is broken into two molecules of pyruvic acid 4. process by which cells release energy in the absence of oxygen 6. second stage of cellular respiration, in which pyruvic acid is broken down into carbon dioxide in a series of energy-extracting reactions 7. principal pigment of plants and other photosynthetic organisms 10. organisms that make thier own food 11. one of the carrier molecules that transfers high-energy electrons from chlorophyll to other molecules 12. region outside the thylakiod membranes in cholorplasts 14. light-absorbing colored molecule 15. process that does not require oxygen 16. reactions of photosynthesis in which energy form ATP and NADPH is used to build high energy compounds such as sugars 17. one of the principal chemical compounds that living things use to store energy 18. large protien that uses energy from H+ ions to bind ADP and phosphate groupo together to produce ATP 19. saclike body in chorloplats made of photosynthetic membranes thata contain photosystems

Down 2. reactions of photosynthesis that uses energy from light to produce ATP and NADPH 3. obtain energy form the foods they consume 5. process that releases energy by breaking down food molecules in the presence of oxygen 8. process by which plants and some other organisms sue light energy to power chemical reactions that convert water and carbon dixide into oxygen and high-energy carbohydrates 9. electron carrier involved in glycolysis 13. amount of enegy required to raise the temperture of 1 gram of water by 1 Celsius degree

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