Photosynthesis (8.2) State Standard SB3A. Explain the cycling of energy through the processes of photosynthesis and respiration.

8.2 Photosynthesis Overview Photosynthesis traps __________ (solar) energy & converts it to __________ energy in the form of _______________ (food). *Don’t forget – photosynthetic organisms must also break down some of those carbohydrates to form ATP for themselves.

8.2 Photosynthesis *Label the reactants & products in the equation below Overview cont’d The trapped light energy is used to convert the raw materials CO2 & H2O into carbohydrates & O2 PHOTOSYNTHESIS EQUATION

8.2 Photosynthesis Overview cont’d The key to absorbing light is a green __________ called __________, found in chloroplasts. Chloroplast Parts __________ – looks like a pancake (flattened sac) __________ (pl. grana) – stack of thylakoids __________ – space between grana – gel- like matrix

Overview cont’d Photosynthesis… requires __________ of light energy. __________, __________ leaves increase the amount of light that can be absorbed supports almost all __________ on Earth either directly or indirectly. converts light energy to chemical energy usually in the form of glucose (carb). Occurs in the __________.

Photosynthesis occurs in __ phases. Chapter 8 Cellular Energy 8.2 Photosynthesis Overview cont’d Photosynthesis occurs in __ phases. Light-__________ reactions * also called light reactions * occur in the thylakoid membrane. * This is the ______ part of photosynthesis. Light-__________ reactions *also called the Calvin Cycle * occur in the stroma * This is the _________ part of photosynthesis

Light Dependent Reactions Chapter 8 Cellular Energy 8.2 Photosynthesis Part 1 Light Dependent Reactions Location: __________ __________ water molecules Produces __________ for the Calvin Cycle

Part 1 Light Dependent Reactions Cont’d 8.2 Photosynthesis Part 1 Light Dependent Reactions Cont’d Products __________ __________ (a high energy electron carrier) _______ (formed from the splitting of water by light) Where do they end up? ATP and NADPH go on to __________ the next group of reactions Oxygen is __________ out of the cell and we breathe it in.

Part 2: The Calvin Cycle (Light-Independent) Chapter 8 Cellular Energy 8.2 Photosynthesis Part 2: The Calvin Cycle (Light-Independent) Location: __________ stores energy in organic molecules such as _________. powered by the products of the light dependent reactions

Part 2: The Calvin Cycle (Light-Ind) cont’d 8.2 Photosynthesis Part 2: The Calvin Cycle (Light-Ind) cont’d Uses __________ __________ (CO2) from the atmosphere & energy from the ______-__________ reactions to fuel its processes. Products: __________ or other sugars (which are stored) * some are used by the __________ * others are used by __________

Part 2: Calvin Cycle (Light Ind.) cont’d 8.2 Photosynthesis Part 2: Calvin Cycle (Light Ind.) cont’d

Calvin Cycle Part 2: Calvin Cycle (Light Ind.) cont’d The Calvin Cycle 8.2 Photosynthesis Part 2: Calvin Cycle (Light Ind.) cont’d The Calvin Cycle is the sugar factory! Calvin Cycle Chocolate Chips Cotton Candy Candy Cane Coca Cola

Photosynthesis Graphic Organizer