BCHM 307 Final

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Author:
MRK
ID:
250171
Filename:
BCHM 307 Final
Updated:
2013-12-02 13:43:33
Tags:
Final not Quiz IV or
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Description:
Photosynthesis
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  1. Chloroplast
    • Energy producing organelle in plants
    • Inner membrane split is organized into Thylakoid stacks of Granum
    • Inner space is called stroma
    • H+ gradient is formed inside granum and pumped out
  2. chlorophyll and accessory pigments
    • They have conjugated double bond system
    • absorb light energy
    • Funnels energy toward the photosynthetic reaction
    • Or it is lost as heat
  3. Photosynthetic reaction center
    • where energy is funneled
    • when it is excited it attains a more negative (higher redox potential)
  4. Light reaction equations
    • 2H2O + 2NADP+ -> 2NADPH + 2H+ + O2
    • ADP + Pi -> ATP + H2O
  5. Dark Reaction equation
    CO2 + 2NADPH + 2H+ -> 2NADP+ + (CH2O) + H2O
  6. The Z Scheme
    • photosynthetic e- transport that occurs in the thylakoid membrane
    • uses integral protein complexes and pigments
  7. Where is H+ pumped during the Z scheme
    • First in PS II (4)
    • Then Plastoquinone (8)
    • Then ferredoxin-NADP+ reductase (uses 2 H from outside)
  8. How to make ATP in chloroplast
    • Proton translating ATP Synthase
    • moves from inside thylakoid to stroma
  9. P680 and P700
    • Photosynthetic rxn centers
    • Has a very low redox potential P680
    • redox potential becomes very high P700
    • Extend the action spectrum of chlorophyll
  10. RUBISCO
    • ribulose-1,5-bisphosphate
    • in chloroplast stroma
    • cataylzes the condestation of CO2¬†with¬†ribulose-1,5-bisphosphate to form 3-phosphoglycerate (stable 3-C sugar)
    • It is about fixing the carbon and regenerating RUBISCO
  11. Glyceraldehyde-3-phosphate
    • 1. changed to dihydroxyacetone phosphate then regenerated into RUBP (5 of 6)
    • 2. Changed into sucrose, starch, cellulose (1 of 6)
  12. Calvin Cycle
    • To Fix CO2
    • Need RUBP
    • Need to remake RUBP
    • All our C has been through it
  13. Why are plants Green
    because they don't absorb green light

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