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Light harvesting

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Enzymes and chlorophyll are. imbedded in the thylakoid membranes ... 1. Chlorophyll fluorescence. 2. Heat (= 'non photochemical quenching' ... – PowerPoint PPT presentation

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Title: Light harvesting


1
Light harvesting and Carbon fixation in
photosynthesis a brief review
Graphics are from a web site for a course by Bill
Grimes and Rick Hallick http//www.blc.arizona.e
du/courses/181gh/rick/photosynthesis/default.html
2
chloroplast
3
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4
Enzymes and chlorophyll are imbedded in the
thylakoid membranes
5
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6
Energy from the excited state can be transferred
to 1. Chlorophyll fluorescence 2. Heat (
non photochemical quenching) 3. Photosynthesis
( photochemical quenching)
of chlorophyll
of chlorophyll
7
The first step of photochemical electron
transport (photochemical quenching)
8
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9
Thylakoid membrane in the dark
10
thylakoid membrane in the light
11
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15
  • Equations for Calvin-Benson Cycle
  • RUBISCO is the only CO2 fixing enzyme
  • ribulose bisphosphate carboxylase oxygenase
  • 6 CO2 are fixed per glucose synthesized
  • Remainder of reactions used to synthesize
    glucose and regenerate RuBP

16
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