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Photo + Synthesis

Photo + Synthesis. Photosynthesis is made up of two Latin words. Photo is the first; it means “light”. Synthesis is the second; it means “to put together”. Requirements for Photosynthesis. In order for photosynthesis to occur, three things must be present and available to the plant. Water

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Photo + Synthesis

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  1. Photo + Synthesis • Photosynthesis is made up of two Latin words. • Photo is the first; it means “light”. • Synthesis is the second; it means “to put together”.

  2. Requirements for Photosynthesis • In order for photosynthesis to occur, three things must be present and available to the plant. • Water • Carbon Dioxide • Solar radiation (sunlight)

  3. What Does Photosynthesis Do? • Transforms sunlight into chemical energy (sugars). • Fixes atmospheric carbon. • Produces oxygen as a by-product. • Frees water from the atmosphere.

  4. The Equation for Photosynthesis 6 CO2 + 12 H2O -------> 1 C6 H12 O6 + 6 H2O+ 6O2 This means that carbon dioxide, water, and the sun’s energy are used by plants to make sugars, water, and oxygen. Light Energy

  5. Light Reactions • This reaction only occurs during daytime, or when there is artificial light provided. • Light energy is converted into chemical energy used during the later stages of photosynthesis.

  6. Dark Reactions • This reaction may occur at any time. It does not need light. • Stored chemical energy made during the light reaction is used to change carbon dioxide to carbohydrates (sugars).

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