Light Reactions

* Occurs only when Light is present.
2. Takes place in grana / thylakoids.
3. Chlorophyll molecules trap light.
4. This cause their electron's to absorb much energy, became energized and start to flow.
5. Energy to flowing electron is used to make ATP (adenosine triphosphate- a high energy molecule.
6. Light Energy is charged to the energy flowing electron in turn changed to chemical energy in ATP.
7. Water enters the grana split into hydrogen & oxygen.
8. Hydrogen attaches to NADP becomes NADPH - a hydrogen carrier molecule.
9. While oxygen moves out through the stomata into the air.
10. The important products of light energy / reaction are ATP & NADPH, which are both needed in dark reaction takes place.