1. Photosynthesis

2. Energy Autotrophs Use energy from sun to make their own food Heterotrophs Cannot make their own food, so they eat autotrophs or other heterotrophs for food.

3. What is photosynthesis? Plants take energy from the sun and store it as sugars

4. Equation for Photosynthesis + light energy

5. Light & Pigments Visible Spectrum White light can be broken down into colors Pigments Absorb certain colors of light Reflect colors not absorbed

6. Chloroplast Pigments Chlorophyll Located in the THYLAKOID Absorbs red and blue light and reflects green Carotenoids Accessory pigment for colors yellow, orange, & brown

7. Parts of Photosynthesis Light Reactions Require light THYLAKOID Occur in the THYLAKOID Dark Reactions Does not require light STROMA Occurs in the STROMA

9. Light Reactions SunlightWater ATP NADPH Sunlight and Water are used to make ATP and NADPH Sun excites electrons and they go to a higher energy level OXYGEN (O 2 ) OXYGEN (O 2 ) is released This provides fuel for the dark reactions

12. Dark Reactions…the Calvin Cycle CO 2 ATP NADPH PGAL Uses CO 2, ATP, and NADPH to make PGAL PGAL is a building block to make glucose Carbohydrate sugar