2. Photosynthesis MT: Cytology I will understand the process of photosynthesis.

3. What organisms go through photosynthesis?  Producers/autotrophs, such as plants, trees, algae, some bacteria

4. Where does photosynthesis take place?  In the chloroplasts of plant cells found in the leaves!

5. Chloroplasts have chlorophyll  Chlorophyll is a green pigment that reacts to sunlight by transferring energy to e- (electrons)  Makes chloroplasts and plants look green  Reflect green light waves from the sun Granum Single thylakoid Stroma (fluid)

6. Photosynthesis  Process that uses the energy of sunlight to convert water and carbon dioxide into sugars (glucose) and oxygen.

7. If you were making a cake, what would the…  Reactants be? flour eggs sugar water etc  Product be? a cake!

8. Photosynthesis Eqn: Sunlight + 6CO 2 + 6H 2 O = C 6 H 12 O 6 + 6O 2 carbon dioxide water sugar (glucose) oxygen

9. Photosynthesis Eqn: 6CO 2 + 6H 2 O = C 6 H 12 O 6 + 6O 2 carbon dioxide water sugar (glucose) oxygen Reactants “what is used” Products “what is made”

10. Where does the energy for the reactions in photosynthesis come from?  e- from chlorophyll, charged by sunlight  NADPH and ATP formed in LD reaction

11. Photosynthesis Light-Dependent Reaction Light-Independent Reaction AKA Calvin Cycle - sunlight is required - O 2 is produced from water - e- (light energy) fuel the reactions -sunlight is NOT required -Glucose is produced from CO 2

12. Factors that affect photosynthesis  1. Water – needed to start the LD reaction  2. Temperature – proteins work best between 0-35 degrees Celcius  3. Light – need light to excite e- in chlorophyll

13. Photosynthesis Song http://www.youtube.com/watch?v=4s8x1KLMzL0