Photosynthesis Learning Goal 5-6

Chloroplast The organelle that does PHOTOSYNTHESIS Parts: Turns sunlight into food energy (sugar) Parts: Thylakoid Green coins Granum Stack of thylakoids Stroma Outer jelly substance

Review Which organelle does photosynthesis? What are three parts of a chloroplast?

Photosynthesis Equation Light Energy Chloroplast CO2 + H2O Sugars + O2

Photosynthesis Equation Reactants: what the plant needs Water (H2O) Carbon Dioxide (CO2) Sunlight Products: what the plant makes Oxygen (O2) Sugar = Glucose (C6H12O6) 6CO2 + 6H2O + Sunlight  6O2 + C6H12O6

Review What are the reactants in photosynthesis? What are the products?

Stages of Photosynthesis Light Dependent Reactions In the Thylakoids Pigment = Chlorophyll Light Energy charges batteries (ATP, NADPH) Calvin Cycle (Light Independent Reactions) In the Stroma Batteries (ATP, NADPH) make food (Sugar/Glucose)

Review What part of the chloroplast does the light dependent reactions? What part does the Calvin Cycle?

Photosynthesis Chloroplast H2O Sugars CO2 Light O2 NADP+ ADP + P Dependent Reactions Calvin Cycle ATP NADPH Chloroplast O2

Factors Affecting Photosynthesis Temperature The more reactants the faster it goes Eventually photosynthesis reaches a maximum speed If you are missing ANY reactant (ingredient), photosynthesis will stop

Review What temperatures might slow down photosynthesis? If a plant has an unlimited amount of reactants, will photosynthesis speed up forever? What can stop photosynthesis?

Microscopes Look at an Elodea plant in the microscope and draw what you see below (the green dots in each cell are chloroplasts):