Photosynthesis.txt

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Author:
svtassclass
ID:
80611
Filename:
Photosynthesis.txt
Updated:
2011-04-19 07:56:55
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photosynthesis
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photosynthesis
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  1. organisms that make their own food
    autotroph
  2. organisms that obtain their energy from the food they eat
    heterotroph
  3. adenosine triphosphate, a high energy molecule that releases energy
    ATP
  4. adenosine diphosphate, the "uncharged" version of ATP
    ADP
  5. the process in which energy in sunlight is used to convert water and carbon dioxide into sugars and oxygen
    photosynthesis
  6. concluded that a plant gets most of its mass from water
    van Helmont
  7. candle in a jar experiment concluded that plants release oxygen
    Priestley
  8. watched aquatic plants bubble and found that plants need sunlight to produce oxygen
    Ingenhousz
  9. Photosynthesis in words
    • carbon dioxide + water -> sugar and oxygen
    • (the word light over the arrow)
  10. Photosynthesis in chemical equation
    6CO2 + 6H2O -> C6H12O6 + 6O2
  11. in order to make carbohydrates a plant needs:
    • water
    • carbon dioxide
    • sunlight
    • chlorophyll
  12. a pigment molecule found in chloroplasts that absorbs sunlight energy
    chlorophyll
  13. where gas exchange occurs on the leaf
    stomata
  14. thickened regions of membrane in a chloroplast where photosynthesis takes place
    thylakoids
  15. stacks of thylakoids are called
    granum
  16. the liquid surrounding the thylakoids
    stroma
  17. the light reaction takes place here
    thylakoid membrane
  18. Chlorophyll A is the most important pigment, the rest are called __________ pigments
    accessory
  19. accessory pigments include:
    • chlorophyll B - green
    • carotenoids - orange and red
    • xanthophylls - yellow
  20. pigments are found in the membrane in groups called...
    photosystems
  21. the "photo" part of photosynthesis, energy is created and stored
    light reaction
  22. the "synthesis" part of photosynthesis. energy is used to make sugars
    dark reaction or light independent reaction
  23. the calvin cycle takes places during this reaction
    dark reaction
  24. this is made as a waste product of the light reaction
    oxygen
  25. these high energy molecules are created during the light reaction
    • ATP
    • NADPH
  26. ETC
    electron transport chain
  27. Photosystem I is also known as __________ because it absorbs this wavelength of light best.
    PS 700
  28. Photosystem II is also known as ______ because it absorbs this wavelength of light best.
    PS 680
  29. reactants for light reaction
    • water
    • uses sunlight
  30. products of light reaction
    • ATP
    • NADPH
  31. The area where light energy is absorbed and electrons are excited FIRST
    Photosystem II
  32. as electrons move down the ETC, energy is used to create ___-
    ATP
  33. electrons are excited in photosystem II, move to a receptor and the energy used to create this high energy molecule
    NADPH
  34. dark reactions happen here
    stroma
  35. true or false: dark reaction only happens in the dark
    false, dark is used in place of light independent
  36. carbon dioxide is "fixed" into ____-
    sugar
  37. It takes ___ turns of the Calvin cycle to release 1 PGAL
    3
  38. ___ PGAL = 1 Glucose
    2
  39. the 6C moluecule created when CO2 is added to RuBP quickly converts into 2 ________
    PGA molecules (3C each)
  40. the enzyme that catalyzes the reaction where PGA is created (carboxylation)
    rubisco
  41. PGA is reduced to PGAL with the help of these high energy molecules
    • ATP
    • NADPH
  42. PGAL needs _____ to convert to RuBP
    ATP
  43. product of the dark reaction
    sugar
  44. true or false: the Calvin cycle makes sugar from carbon dioxide
    true
  45. hydrogen ions released when PSII splits water enter the stroma through this
    ATP synthase
  46. energy is created when a hydrogen ion uses this channel to move through the thylakoid membrane
    ATP synthase
  47. What is this?
    light reaction of photosynthesis
  48. what is this?
    the dark reaction or light independent reaction
  49. what is this?
    photosynthesis

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