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Cyclic photosynthesis, animation

K003/8112

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Credit

FRANCIS LEROY & LOUIS BEUCLER, BIOCOSMOS / SCIENCE PHOTO LIBRARY FRANCIS LEROY & LOUIS BEUCLER, BIOCOSMOS / SCIENCE PHOTO LIBRARY

Caption

Cyclic photosynthesis in green plants, animation. A cyclic electron transport pathway which produces adenosine triphosphate (ATP) without the synthesis of NADPH2 (nicotinamide adenine dinucleotide phosphate). Green plants use photosynthesis to synthesise carbohydrate from carbon dioxide (CO2) and water (H2O). In a series of reactions light is used to drive the production of NADPH and ATP. These, in turn, are used to produce carbohydrate from C02 and H2O. Cyclic phosphorylation takes place in the chloroplasts of plant cells and is the process by which NADPH and ATP is synthesised. An electron from photosystem II (yellow circle) passes to ferredoxin (purple), cytochrome bf (orange) and then to plastocyanin (yellow). This sequence creates a concentration gradient which is then used to power ATP synthase (to the right hand side) and produce ATP.

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Clip Properties:

  • Duration: 00:01:20
  • Audio: No
  • Interlaced: No
  • Capture Format: QuickTime Animation
  • Codec: Photo - JPEG

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