Photosynthesis Cellular Respiration and ATP

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Across
  1. 4. Enzyme that synthesizes ATP using a proton gradient.
  2. 6. Protein–pigment complex in thylakoid membranes that absorbs light energy.
  3. 8. Gain of electrons in a chemical reaction.
  4. 11. Immediate energy currency of the cell.
  5. 12. Organelle in plant cells where light-dependent and light-independent reactions of photosynthesis occur.
  6. 15. Anaerobic pathway that regenerates NAD⁺ when oxygen is absent.
  7. 18. Series of membrane proteins that transfer electrons to power ATP formation.
  8. 19. A six-carbon sugar that stores chemical energy produced by photosynthesis.
  9. 20. GRADIENT Difference in hydrogen ion concentration that drives ATP production.
Down
  1. 1. Organelle that carries out aerobic cellular respiration and produces most ATP.
  2. 2. High-energy electron carrier produced in the light reactions and used in the Calvin cycle.
  3. 3. Stage of respiration in the mitochondrial matrix that releases CO₂ and loads electron carriers.
  4. 5. Loss of electrons during a chemical reaction, important in energy transfer.
  5. 7. Lower-energy molecule formed when ATP releases energy.
  6. 9. Innermost space of the mitochondrion where the Krebs cycle occurs.
  7. 10. First stage of cellular respiration that splits glucose in the cytoplasm without requiring oxygen.
  8. 13. Gas released during photosynthesis and required for aerobic respiration.
  9. 14. Light‑independent cycle that uses CO₂, ATP, and NADPH to build sugars.
  10. 16. A negativelyvely charged particle transferred along carrier molecules in redox reactions.
  11. 17. Flattened membrane sacs inside chloroplasts that contain chlorophyll and host the light reactions.