What is the source for photosynthese
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During the process of photosynthesis, cells use carbon dioxide and energy from the Sun to make sugar molecules and oxygen. These sugar molecules are the basis for more complex molecules made by the photosynthetic cell, such as glucose.
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Photons are absorbed by chlorophyll molecules within Photosystems I and II (and antennae complexes), generating higher-energy ‘excited’ states of the photosystems which can carry out energetically costly chemical reactions.
Everything else that is involved is just moving the energy around to make use of it in different ways. If the energy did not come from a photon is not photosynthesis; it's heterotrophy or chemotrophy etc.
Everything else that is involved is just moving the energy around to make use of it in different ways. If the energy did not come from a photon is not photosynthesis; it's heterotrophy or chemotrophy etc.
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