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5 Written questions

5 Matching questions

  1. CAM photosynthesis
  2. Why do cyclic pathways exist?
  3. Steps of Noncyclic pathway (photophosphorlation)
  4. Photosystems
  5. C3 Photosynthesis
  1. a most plants
    goes through the C3 pathway
    normal photosynthesis
  2. b where chlorophyll is stored
    include antenna complex/reaction center
    2 types= photosystem II and photosystem I (in order in which they occur, named in order of discovery)
  3. c plants use this as a back up
    bacteria use it to make ATP from sunlight
    probably the first system
  4. d 1. Light energizes 2 electrons (source=H2O, energy from this splitting goes to photosystem II)
    2. High energy electrons passed to electron transport chain
    3. release energy as they pass through the chain (fuels chemiosmosis that produces ATP)
    4. low energy electrons from transport chain pass to photosystem I
    5. energized again from the sun
    6 high energy electrons move to 2nd electron transport chain, then to electron carrier (NADPH)
  5. e only fix carbon at night
    dry, desert environment
    only opens the stomata at night, which converts to a temporary carbon storage molecule, which is then used in the calvin cycle
    ex. cactus, aloe plants, succulants

5 Multiple choice questions

  1. C4 plants
    before calvin cycle, CO2 is fized into a 4 carbon molecule
    seasonally (long, dry season)
    ex. corn, sugarcane, crabgrass
  2. 6CO2 +12H20 = C6H12O6 + 6O2

    CO2 and the C6H12O6 are involved in the reduction reaction, H20 and O2 are involved in the oxidation reaction
  3. inclosed by the inner membrane
  4. cells where chloroplasts are located, in the middle of the leaf, have 20 to 100 chloroplasts
  5. when an electron returns to its ground state, releases light

5 True/False questions

  1. summary of noncyclic pathwaycyclic photophosphorlation produces ATP only
    simplest form
    electrons recycle so none are needed
    not O2 released, bc H2O is not split


  2. Cyclic pathwayspigment in chloroplasts that trap light


  3. thylakoidpackets of energy that travel in waves, one of these energizes one electron


  4. Granum (grana plural)stacks of thylakoids


  5. Light Independent Reactions/Carbon Fixation ReactionsGOAL=convert to storable form of chemical energy
    1. independent of light
    2. conver inorganic forms of carbon (CO2) into organic form to create glucose
    3. Uses products of the Light-Dependent reactions to fix the carbon


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