12/31/2008

Photosynthesis Overview

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Overview of Photosynthesis: Photosynthesis involves the conversion, by various phototrophic organisms, of light energy into organic molecule...
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Photophosphorylation

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Photophosphorylation is the light dependent process by which a proton gradient generates ATP from ADP and Pi. ADP + Pi → ATP synthase → ATP ...

Light-reactions

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The photosynthetic reactions that require light occur within the thylakoid membrane. These light-dependent photosynthetic reactions employ...

Nonoxygenic photosynthesis

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Several photosynthetic bacteria , such as the sulfur bacteria , do not generate oxygen. Nonoxygenic , or aerobic photosynthesis differs fro...

Oxygenic photosynthesis

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Oxygenic photosynthesis utilizes light energy to generate ‘excited’ electrons from water: 2H2O → 4e - + 4H + + O2 A photon is absorbed by ...

C-3

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Left (click to enlarge): The C-3, Calvin, photosynthetic carbon reduction (PCR), reductive pentose phosphate cycle (RPP), carbon fixation. ...

Calvin cycle

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The Calvin cycle is a light independent ("dark-reaction") process of carbon fixation that takes place in the chloroplasts of all ...

C-4

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In warm, dry conditions the C-4 pathway permits fixation of CO2 with reduced losses due to photorespiration. The initial CO2 fixing enzyme i...

CAM

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CAM is the acronym for Crassulacean Acid Metabolism, named for the Crassulaceae plant family in which it was discovered. The chemical react...