Chem120A+Notes+-+Francis+Photosynthesis

Chem120A+Notes+-+Francis+Photosynthesis - Overview of...

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Chem 120 Overview of Photosynthetic CO 2 Fixation Thylakoids: aka the Lehninger Ch. 19, p. 741 Calvin cycle Lehninger Ch. 20, p. 765 3CO 2 + H 2 O + 6 NADPH + 9 ATP 1 GAP + 6 NADP + + 9 ADP + 8 P i Net Equation:
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Chem 120 The Oxygen Evolving Complex of PSII Lehninger Ch. 19, p. 734 Lehninger Ch. 19, p. 739
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Chem 120 Two Tandem Photosystems in Green Plants ey oints: Key Points: - In plants, two photosystems are coupled. - Electron from PSII exciton is sent to PSI - Electron from PSI exciton is sent to make NADPH - PSII electrons are replenished by oxidation of H 2 O to form O 2 - Many photosynthetic bacteria have PSII only, so they only make ATP with this process. 2H 2 O + 2NADP + + 8 photons Net Reaction: O 2 + 2NADPH + 2 H + Lehninger Ch. 19, p. 733
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Chem 120
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Chem 120 Mechanisms of Energy Transfer 1. Radiative (or “Trivial”) Transfer D* D + h ν +h * A + h ν A 2. Electron Exchange (or Dexter) Transfer Electron Exchange -Requires collision between chromophores Electron Exchange D* A D A* 3. Coulombic (or Förster) Transfer -Functions over a distance of 2-10nm Coulombic teraction -No collision required -Energy transfer is nonradiative
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This note was uploaded on 09/28/2009 for the course CHEM 120A taught by Professor Whaley during the Spring '07 term at University of California, Berkeley.

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Chem120A+Notes+-+Francis+Photosynthesis - Overview of...

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