Calvin cycle, animation

Videonummer 11936068
Calvin cycle and thylakoid, animation. The Calvin cycle produces sugars from carbon dioxide (CO2) and ribulose 1, 5-bisphosphate. The cycle is composed of a series of biochemical reactions that require ATP (adenine triphosphate) and NADPH (nicotinamide adenine dinucleotide phosphate). The Calvin cycle can be divided into three stages. Stage one (blue) is the carbon fixation stage. Ribulose 1, 5-bisphosphate is combined with CO2 by the enzyme ribulose bisphosphate carboxylase (RuBisCo) to produce 3-phosphoglycerate. The second stage (orange) is the reduction stage. ATP powers the conversion of 3-phosphoglycerate to 1, 3-bisphosphoglycerate. NADPH helps convert 1, 3-bisphosphoglycerate into glyceraldehyde 3-phosphate (G3P). Some G3P is sent to the cytoplasm to form sugars, while some G3P remains in the Calvin cycle for the regeneration of ribulose 1, 5-bisphosphate. The thylakoid (right) is where photosynthesis takes place in plants and cyanobacteria. It is where ATP and NADPH are produced by ATP synthetase and the electron transport chain, respectively.
Lizenzart: Lizenzpflichtig
Credit: Science Photo Library / Biocosmos / Francis Leroy & Edwin Vandermeeren
Modell-Rechte: nicht erforderlich
Länge: 37 Sekunden
Seitenverhältnis: 16:9
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