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Photosynthesis Food for thought… What materials go in? What materials are released? Where does the matter in the tree come from? Warm Up… 1. In which cell structure does photosynthesis occur? 2. What types of living things carry out photosynthesis? Photosynthesis • most important chemical reaction on our planet! Equation Sunlight (ENERGY!) CO2+ H2O reactants/substrates C6H12O6 + O2 products Describe Photosynthesis: • Transforms light energy to chemical energy (stored in glucose). • Occurs in plants, algae and some bacteria • Takes place in the chloroplasts, using chlorophyll, the green pigment in plants SUGAR! • Some is used for energy right away • Stored as starch • Converted into other biochemicals Why is this important to us? Food! -Plants take energy from the sun and turn it into chemical energy, (in food molecules), that living things can use! Oxygen! - Plants give off oxygen as a bi-product of photosynthesis: animals, (like us), need this to breathe!! Photosynthesis Where does it occur?(organelle) Why is it important? What is the Substrate? Products? What is the equation? Who does it? Color in the Chloroplast Diagram! • • • • • • • • • Chloroplast – Green Outer Membrane – Dark Green Inner Membrane – Light Green Stroma – Light Blue Grana & Thylakoid – Dark Blue Genetic Material – Purple Ribosome – Orange Starch Grain – Red Photosynthesis - Yellow Before you leave… Post it!!! • 1. Write the formula for Photosynthesis. • 2. Where (think organelle!) does Photosynthesis happen? • 3. List 2 reasons Photosynthesis is Important!