bio ch. 7

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bio ch. 7
2012-10-08 16:39:29


ch. 7
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  1. photosynthesis
    plants use sunlight to make glucose; 6CO2 + 12 H20= glucose + 6 O2
  2. autotrophs
    make their own food; producers; plants
  3. heterotrophs
    get food from other organisms; consumers; animals, humans
  4. chloroplast
    where photosynthesis takes place
  5. stomata
    pores in the plant leaves for CO2 to come in and O2 to exit
  6. mesophyll
    middle of the leaf
  7. stroma
    open space in chloroplast; where calvin cycle takes place
  8. thylakoid
    a flattened disk in chloroplasts
  9. grana
    stacks of thylakoid disks; where light reaction takes place
  10. light reaction
    photosytem I & II; makes ATP and O2
  11. calvin cycle
    stage that actually makes glucose from CO2; dark reaction
  12. wavelength
    a measure of the difference between waves of energy
  13. an object looks a particular color beacuse..
    it reflects that wavelength of light back
  14. spectrophotometer
    measures how much light is absorbed by a solution
  15. different wavelengths of light also have different amounts of energy;
    shorter wavelengths have more energy
  16. chlorophyll
    green pigment used in photosynthesis
  17. carotene
    yellow-organge pigment
  18. xanthrophyll
    brown pigment
  19. anthocyanin
    red pigment
  20. photosystem II
    makes oxygen and ATP
  21. photophosphorylation
    production of ATP in plants from light energy
  22. photosystem I
    makes NADPH
  23. NADPH
    NADP holds an H+ for the calvin cycle
  24. calvin cycle
    CO2 made into sugar; C3 cycle;  6CO2 + 18 ATP + 12 NADPH= glucose
  25. CAM pathway
    get CO2 at night, convert to malate, close stomata during day, at night convert malate back to CO2 and starts dark reaction
  26. C4 plants
    converts CO2 into oxaloaccetate, sends oxaloacetate to a different part of the cell, converts oxaloacette back to CO2 and starts dark reactions