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KEY CONCEPT The overall process of photosynthesis produces sugars that store chemical energy.

KEY CONCEPT The overall process of photosynthesis produces sugars that store chemical energy. Photosynthetic organisms are producers. Producers make their own source of chemical energy. Plants use photosynthesis and are producers. Photosynthesis captures energy from sunlight to make sugars.

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KEY CONCEPT The overall process of photosynthesis produces sugars that store chemical energy.

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  1. KEY CONCEPTThe overall process of photosynthesis produces sugars that store chemical energy.

  2. Photosynthetic organisms are producers. • Producers make their own source of chemical energy. • Plants use photosynthesis and are producers. • Photosynthesis captures energy from sunlight to make sugars.

  3. chloroplast leaf cell leaf • Chlorophyll is a molecule that absorbs light energy. • In plants, chlorophyll is found in organelles called chloroplasts.

  4. grana (thylakoids) chloroplast stroma Photosynthesis in plants occurs in chloroplasts. • Photosynthesis takes place in two parts of chloroplasts. • grana (thylakoids) • stroma

  5. The light-dependent reactions capture energy from sunlight. • take place in thylakoids • water and sunlight are needed • chlorophyll absorbs energy • energy is transferred along thylakoid membrane then to light-independent reactions • oxygen is released

  6. The light-independent reactions make sugars. • take place in stroma • needs carbon dioxide from atmosphere • use energy to build a sugar in a cycle of chemical reactions

  7. granum (stack of thylakoids) 1 chloroplast sunlight 6H2O 6O2 2 energy thylakoid stroma (fluid outside the thylakoids) 6CO2 1 six-carbon sugar C6H12O6 3 4 • The equation for the overall process is: 6CO2 + 6H2O  C6H12O6 + 6O2

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