CO 2carbon dioxide 2H 2 O water photons light energy CH 2 O carbohydrate O 2oxygen H 2 O water. The pathway of electron flow starts at photosystem II which is homologous to the photosynthetic reaction center of R. Photosynthesis Photosynthesis And Cellular Respiration Photosynthesis Lessons 6CO 2 6H 2 O C 6 H 12 O 6 6O 2. . Carbon dioxide sunlight. IiName a gas that is essential for the dark stage. PSI oxidizes plastocyanin and reduces another soluble electron carrier protein ferredoxin that resides in the stroma. Or to put it another way the electrons need to jump from the water molecules until they form ATP passing through various intermediate chemical forms as in a transport chain. The two stages of photosynthesis are light reactions and the Calvin cycle. Dark reaction utilizes ATP and NADPH energy molecules coming from the light reaction of photosynthesis for the regeneration of RuBP and carbohydrate synthesis. ...
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