1. Photosynthesis 8-2

2. What Role do Pigments play in Photosynthesis?
R O Y G B I V
Pigments- colored substances that reflect or absorb light. 
Chlorophyll- green pigment in plants, absorb red and blue regions. 
Carotenoid- orange/yellow pigments found in carrots, absorb green and blue regions. 
Chloroplast- organelle in the leaf where sunlight is collected and photosynthesis takes place.

3. Chloroplast
Thylakoids- Saclike photosynthetic membranes (Grana-Stacks of thylakoids)
Stroma- Fluid Portion of the chloroplast outside of the thylakoid

4. NADP+
Electron Energy Carrier that transfers energy to another molecule.
Accepts 2 high energy electrons and one H+ (Hydrogen Ion) and converts NADP+ into NADPH.

5. Conversion of NADP+ into NADPH
Energy of the sunlight can be trapped in chemical form.

6. NADPH
Carry the high-energy electrons that were produced by light absorption in chlorophyll to chemical reactions elsewhere in the cell.
Help build molecules the cell needs like carbohydrates such as glucose.

7. 2 Stages of Photosynthesis
1.) Light Dependent Stage
1. Sunlight hits the leaf and solar energy is collected in the chloroplast.
2. Electrons become “excited”.
3. Water is split- H’s carry electrons/ O’s sent to atmosphere. 

8. 2.) Light-Independent Reactions
CO2 from atmosphere enters the leaf.
Calvin Cycle X6
Glucose made

9. Factors affecting Photosynthesis
Light Intensity
Carbon Dioxide Concentration
Temperature
Water

10.  Uses of Glucose
Animal Energy
Plant Growth/ Starch