Photosynthesis Terms

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Across
  1. 4. stacks of thylakoids.
  2. 5. groups of unstacked thylakoids between grana.
  3. 6. the process of incorporating CO2 into carbohydrate molecules.
  4. 9. a compound that accepts one hydrogen atom and two electrons, forming NADPH; is an electron acceptor.
  5. 10. a packet of light
  6. 11. transport chain /a series of progressively stronger electron acceptors; each time an electron is transferred, energy is released.
  7. 14. the first set of photosynthesis in which light energy excites electrons in chlorophyll molecules, powers chemiosmotic ATP synthesis, and results in the reduction of NADP+ to NADPH.
  8. 16. the light-absorbing green-coloured pigment that begins the process of photosynthesis.
  9. 17. a membrane-bound organelle in green plant and algal cells that carries out photosynthesis.
  10. 19. a system of interconnected flattened membrane sacs forming a separate compartment withing the stroma of a chloroplast.
  11. 21. a compound that donates one hydrogen and two electrons to another molecule, to reform NADP+; is an electron donor.
Down
  1. 1. the photosynthetic membrane withing a chloroplast that contains light-gathering pigment molecules and electron transport chain.
  2. 2. the fluid-filled space inside a thylakoid.
  3. 3. the second set of reactions in photosynthesis (the Calvin cycle); these reactions do not require solar energy.
  4. 7. a molecule containing three high-energy phosphate bonds that acts as the primary energy-transferring molecule in living organisms.
  5. 8. a reaction in which an atom or molecule gains electrons.
  6. 12. a cluster of photosynthetic pigments embedded in a thylakoid membrane of a chloroplast that absorbs light energy.
  7. 13. a cyclic set of reactions occurring in the stroma of chloroplasts that fixes the carbon of CO2 into carbohydrate molecules and recycles coenzymes.
  8. 15. a chemical reaction in which a compound is broken down by light; in photosynthesis, water molecules are split by this.
  9. 18. a reaction in which an atom or molecule loses electrons.
  10. 20. a molecule containing two high-energy phosphate bonds that may be formed by breaking one of the phosphate bonds in ATP.