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La photosynthèse et la respiration cellulaire. Pour les êtres vivants, il existe deux sources d'énergie : la lumière et les aliments. La lumière est utilisée par les végétaux afin qu'ils puissent concevoir leur propre nourriture, donc leur propre énergie, via la photosynthèse. Les végétaux sont des êtres autotrophes.
15 août 2018 · Learn how plants and animals use photosynthesis and cellular respiration to produce energy and ATP. See the reactions, diagrams, and evolutionary origins of these processes.
17 juil. 2016 · In cellular respiration, electrons flow from glucose to oxygen, forming water and releasing energy. In photosynthesis, they go in the opposite direction, starting in water and winding up in glucose—an energy-requiring process powered by light.
Photosynthesis is a synthesis reaction that takes place in plant cells. This reaction allows plants to produce glucose using solar energy. This process is mainly achieved through chlorophyll, a pigment contained in the chloroplasts of plant cells, which give plants their green colour.
31 août 2022 · Learn how photosynthesis and cellular respiration are related, different, and similar processes that occur in living organisms. See the chemical equations, diagrams, and examples of each process and their roles in the carbon cycle.
Through aerobic cellular respiration, organisms break down sugars to produce usable energy in the form of ATP. This process consumes gaseous oxygen and releases carbon dioxide and water. There are four steps: glycolysis, pyruvate oxidation, the citric acid cycle, and oxidative phosphorylation.
Photosynthesis uses energy (from the sun) to convert water and carbon dioxide into glucose and oxygen. Then the glucose can be stored for later use. Cellular respiration turns glucose and oxygen into water and carbon dioxide, releasing energy for the organism to use. Does that help?
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