1. How light is captured by plants to make food
PHOTOSYNTHESIS
How light is captured
by plants
to make food

2. PHOTOSYNTHESIS
Photosynthesis is a process by which light energy is converted into chemical energy of sugars and other organic compounds

3. Light energy from light drives the reactions.
Photosynthesis equation:
6 CO2 + 6 H2O → 6(CH2O) + 6 O2

4. Electromagnetic Energy
The solar energy called visible light drives photosynthesis.
Solar radiation is composed of electromagnetic energy
Remember, energy cannot be created or destroyed.
When light is absorbed by a green plant, a small portion of that energy is converted into chemical energy in the process of photosynthesis.
Why are plants green?

6. Chloroplast Structure
Chloroplasts are the sites of photosynthesis.
These double-membrane bound organelles enclose additional membranes called thylakoids.

7. Plants are green because they have a substance called chlorophyll in them.

8. The chlorophyll samples show peaks of
                                                            
The chlorophyll samples show peaks of
absorbance at wavelengths in the blue and red areas of the visible spectrum.
Chlorophyll absorbs red and blue light but reflect green light!

9. STAGES OF PHOTO- SYNTHESIS
Redwood tree in California- 380 feet tall

10. PHOTOSYNTHESIS

11. Overview of Photosynthesis
STAGE 1 - THE LIGHT DEPENDENT REACTIONS.
Energy is captured from Sunlight.
Water is Split into Hydrogen Ions, Electrons, and Oxygen (O2).
The O2 Diffuses out of the Chloroplasts (Byproduct).

12. Overview of Photosynthesis
STAGE 2 -
The Light Energy is Converted to Chemical Energy, which is Temporarily Stored in ATP and NADPH.

13. Overview of Photosynthesis
STAGE 3 -THE CALVIN CYCLE
The Chemical Energy Stored in ATP and NADPH powers the formation of Organic Compounds (Sugars), using Carbon Dioxide, CO2.

14. Overview of Photosynthesis