1. Overview of Photosynthesis

2. What is Photosynthesis?
Plants use photosynthesis to make sugars
Photosynthesis is a process that captures energy from sunlight to make sugars that store chemical energy

3. What is Photosynthesis?
3. Equation for whole photosynthetic process
 6CO2 + 6H2O → →→→→C6H12O6 (sugar)+ 6O2
   

4. Where does Photosynthesis occur?
Photosynthesis in plants occurs in chloroplasts
Takes place in two parts: stroma and thylokoid
Most chloroplasts are in leaf cells
chloroplast
stroma
grana (thylakoids)

5. Functions of Photosynthesis
Plant produce food for themselves and other organisms.
Where does ALL the energy originate from?

6. Functions of Photosynthesis
All energy comes from the SUN!

7. Functions of Photosynthesis
2. Regulates Earth’s environment (removes carbon dioxide from Earth’s atmosphere)

8. Factors that Affect Photosynthesis
Temperature
As temperature increases, the rate of photosynthesis increases to a maximum and then decreases when temps get too hot.
The rate peaks at a certain temperature, at which many of the enzymes that catalyze the reactions become ineffective. Also, the stomata begin to close, limiting water loss and entry of carbon dioxide.

9. Which graph represents the affect of temperature on the rate of photosynthesis?

10. Draw this graph in your notes

11. Rate of photosynthesis increases as light intensity increases
Factors that Affect Photosynthesis
Light Intensity
Rate of photosynthesis increases as light intensity increases
However, at some point all available e- are excited, and the maximum rate of photosynthesis is reached

12. Which of the graphs represents the effect of light intensity on the rate of photosynthesis?

13. Draw the circled image in your notes

14. Photosynthesis Video

15. Assignment
T4 pg
Periods 5 & 6 turn in notebooks