The overall process of photosynthesis produces sugars that store chemical energy. 6CO2 + 6H2O  C6H12O6 + 6O2.

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Presentation transcript:

The overall process of photosynthesis produces sugars that store chemical energy. 6CO2 + 6H2O  C6H12O6 + 6O2

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

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

Photosynthesis in plants occurs in chloroplasts. stroma grana (thylakoids) Photosynthesis takes place in two parts of chloroplasts. grana (stack of thylakoids) Stroma (chloroplast fluid)

There are 2 stages of photosynthesis Light Dependent Reactions (uses light) (Light Reactions) Light Independent Reactions (doesn’t use light) (Dark Reactions)

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 (dark reactions) oxygen is released

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

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