1. Warm Up (From Article) Where do plants do PHOTOSYNTHESIS?
What are the two steps called?
What is the main product that gets created called?

2. Photosynthesis Notes:
Divide your paper into three columns
(make the middle column the biggest)
Photosynthesis Notes

3. LABEL YOUR COLUMNS
Photosynthesis Notes
Topic Notes Extra Info

4. What is it? Who/what does it? TOPIC: NOTES:
Photosynthesis is the process of converting sunlight into usable food energy
Any Questions? Any memory clues? Write them in the extra info column
Who/what does it?
Photosynthesis is done by AUTOTROPHS – mainly plants, but also protists and some bacteria
Review– What’s an autotroph? Write that in the extra info column

5. Where does it occur? CHLOROPLAST CHLOROPHYLL TOPIC: NOTES:
Photosynthesis occurs in the CHLOROPLASTS, which are found in the green parts of plants
Questions? Extra info? What are the green parts of plants?
A tiny green organelle (cell part) that contains chlorophyll
CHLOROPLAST
What does the suffix PLAST mean?
A pigment that absorbs light wave-lengths. It reflects GREEN light
CHLOROPHYLL

6. Chlorophyll reflects green light (that’s why leaves are green!)
Chloroplast
Chlorophyll reflects green light (that’s why leaves are green!)

7. Overall Reaction Two Steps: TOPIC: NOTES: Light Dependent Reaction
Extra info? GLUCOSE! Where have we seen/heard about that before?
Two Steps:
Light Dependent Reaction
Calvin Cycle
Extra info? Make an inference– what does LIGHT DEPENDENT mean?

8. LIGHT DEPENDENT REACTION
TOPIC: NOTES:
LIGHT DEPENDENT REACTION
Water + Light= Oxygen + ATP + Hydrogen
Extra info? Write that using chemical symbols
Sunlight provides enough energy to split water into separate hydrogen and oxygen molecules. ATP is also created.
Happens in the thylakoids
Extra info? Can this reaction happen without sunlight?

9. LIGHT DEPENDENT REACTION
TOPIC: NOTES:
LIGHT DEPENDENT REACTION
(continued)
Oxygen diffuses out of the plant and into the air we breathe!
Hydrogen and ATP are needed in the next reaction, the Calvin Cycle
NADP+ is a hydrogen carrier. When it is NADPH, it has picked up the hydrogen and is ready to deliver it to the calvin cycle
NADPH

10. CALVIN CYCLE TOPIC: NOTES:
AKA
LIGHT INDEPENDENT REACTION
Hydrogen + ATP + Carbon Dioxide = Glucose
Extra info? Where does the hydrogen come from? The ATP? The carbon dioxide?
The Calvin cycle makes sugar (glucose) from carbon dioxide and the hydrogen from the light dependent reaction. ATP powers the reaction.
Happens in the stroma
Extra info? Can this reaction happen without sunlight?

11. OVERALL INPUTS OVERALL OUTPUTS TOPIC: NOTES:
LIGHT, WATER, CARBON DIOXIDE
OVERALL OUTPUTS
OXYGEN, SUGAR
INTERMEDIATES
Intermediates are things made in one reaction, then used up in the next.
The intermediates are ATP and NADPH

12. BALANCED CHEMICAL EQUATION
TOPIC: NOTES:
BALANCED CHEMICAL EQUATION
6CO2 +6H2O + sunlight = C6H12O6 + 6O2
What’s with the 6 in front of some of the compounds?
Try putting this into words!

13. Questions Which stage of photosynthesis uses… Which stage creates …
Sunlight?
Water?
Carbon Dioxide?
Which stage creates …
Oxygen
Glucose

14. PHOTOSYNTHESIS SONG!