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推荐中集通华6-10吨压路机

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The process of photosynthesis can be described as the conversion of sunlight, carbon dioxide, and water into glucose and oxygen. It takes place in the chloroplasts of plant cells and involves several stages, including the light-dependent reactions and the light-independent reactions (also known as the Calvin cycle).During the light-dependent reactions, light energy is absorbed by chlorophyll in the chloroplasts. This energy is used to split water molecules, releasing oxygen and generating energy-rich molecules called ATP (adenosine triphosphate) and NADPH (nicotinamide adenine dinucleotide phosphate). These energy carriers are then used in the next stage of photosynthesis.In the light-independent reactions (Calvin cycle), ATP and NADPH produced in the light-dependent reactions are used to convert carbon dioxide into glucose. Carbon dioxide enters the plant through tiny pores called stomata and diffuses into the chloroplasts. In a series of enzyme-catalyzed reactions, carbon dioxide is combined with a molecule called RuBP (ribulose biphosphate) to form a six-carbon compound. This compound is then broken down into two three-carbon molecules, which are converted into glucose using ATP and NADPH.Overall, photosynthesis is essential for plants as it allows them to produce glucose, which serves as their main source of energy. Additionally, it plays a crucial role in maintaining the Earth's oxygen levels by releasing oxygen as a byproduct.
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