1. Photosynthesis

2. What is photosynthesis?
…conversion of light energy into chemical energy.

3. Light + 6 CO2 + 6 H2O  C6H12O6 + 6 O2

4. Where does photosynthesis take place?
In the chloroplast
Thylakoids - flattened sacs
Grana – stack of thylakoids
Stroma – fluid around grana

5. 2 main steps of photosynthesis
Light reaction – (light dependent reaction)
* happens in the thylakoid membrane of chloroplasts
* requires 2 types of pigments (chlorophylls)
* light energy splits water – H used in glucose and oxygen released
* produces NADPH & ATP (energy carriers)

6. 2) Calvin cycle (dark reaction or light independent reaction)
* does not DIRECTLY require light
* occurs in the stroma
* uses energy to link carbons into chains of glucose
* produces glucose

7. The process of photosynthesis
Photsynthesis

8. Things to keep in mind:
The rate of photosynthesis is affected by several factors:
1) amount of light (intensity and length of exposure)
2) amount of water
3) amount of CO2
4) temperature

9. 3-2-1
List 3 structures in the chloroplast that are important to P.S.
List 2 stages of P.S.
Describe the 1st stage of P.S.