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What are the two stages in photosynthesis ?? Tell me answer ...... |
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Answer» Thanks The\xa0process of photosynthesis\xa0occurs in two stages:Light-dependent reaction or light reaction:\tPhotosynthesis begins with the light reaction which is carried out only during the day in the presence of sunlight. In plants, the light-dependent reaction takes place in the thylakoid membranes of chloroplasts.\tThe Grana, membrane-bound sacs like structures present inside the thylakoid functions by gathering light and is called photosystems.\tThese photosystems have large complexes of pigment and proteins molecules present within the plant cells, which play the primary role during the process of light reactions of photosynthesis.The chemical equation in the light reaction of photosynthesis can be reduced to:2H2O + 2NADP+ + 3ADP + 3Pi → O2\xa0+ 2NADPH + 3ATP\xa0Light independent reaction or dark reaction\tDark reaction is also called carbon-fixing reaction.\tIt is a light-independent process in which sugar molecules are formed from the water and carbon dioxide molecules.\tThe dark reaction occurs in the stroma of the chloroplast where they utilize the NADPH and ATP products of the light reaction.\t3CO2\xa0+ 6 NADPH + 5H2O + 9ATP → G3P + 2H+ + 6 NADP+ + 9 ADP + 8 Pi |
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