Http://www.youtube.com/watch?v=YeD9idmcX0w Photosynthesis Biology.

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Presentation transcript:

http://www.youtube.com/watch?v=YeD9idmcX0w Photosynthesis Biology

Photosynthesis Used by plants to generate energy Use energy from sun to make sugar (glucose)

Photosynthesis Begins at the leaf within the chloroplast Chlorophyll is the molecule in the chloroplast

Reactants to Photosynthesis Radiant energy (sunlight) + 6 molecules of carbon dioxide + 6 molecules of water Water enters plant through roots and travels to leaves Carbon dioxide and sun enter into leaf.

Products of Photosynthesis 1 molecule of sugar (glucose) + 6 molecules of oxygen Glucose leaves the leaf and provides energy for the plant.

Two stages of photosynthesis Light-dependent reactions require sunlight and happen in the thylakoid Light-dependent reaction makes ATP and oxygen. Light-independent reactions do NOT require sunlight and happen in the stroma (Calvin cycle). ATP with carbon dioxide is used to create glucose.

ATP Universal fuel for all cells Transports needed substances across membranes Activates metabolic reactions that would not occur automatically Performs specific mechanical work, like moving muscles.

Glucose Glucose provides energy for the plant and for animals that eat the plants.