1. BELL RINGER: How do plants get their energy?
What compounds do plants take in (input)?
What compounds do plants put out (output)?
With all of this information (inputs and outputs) and energy……construct the formula for photosynthesis.
(hint): _______
_____ +_____ _____ +_____

2. Bell Ringer: How do plants get their energy?
What compounds do plants take in (input)?
What compounds do plants put out (output)?
With all of this information (inputs and outputs) and energy……construct the formula for photosynthesis.

3. How do plants get energy?
Photosynthesis
How do plants get energy?

5. Photosynthesis Equation
Light Energy + Carbon dioxide + water sugar + oxygen Light Energy + 6CO2 + 6H2O C6H12O6 + 6O2
Reactants
Products

6. Which organelle does Photosynthesis take place inside the plant cell?
The Chloroplast!

7. Structure: Chloroplast (organelle)
Thylakoids: sac-like photosynthetic disks
Granum: Stacks of thylakoids
Stroma: The region/liquid surrounding the thylakoids

8. Inside a Chloroplast
Chlorophyll

9. Chlorophyll:Light and Pigments
Chlorophyll: a pigment found in the thylakoids
Chlorophyll absorbs all light, but reflects the green portion of the spectrum.
This is why plants appear green
By absorbing light it is also absorbing energy!

10. Why are Leaves Green?: The Interaction of light with Chloroplasts.

11. The Process: Photosynthesis
“Inside the Chloroplast”
Chloroplast
Water (H20)
Oxygen (O2)
Glucose (C6H1206)
Carbon Dioxide (CO2)
Light-
Dependent
Reactions
Light Independent
(Calvin Cycle)
Full Electron Bucket
ATP
ADP
Empty Electron Bucket
Sun Light Energy
“Light Side”
“Dark Side”

12. PHOTOSYNTHESIS: 2 PARTS
1st Part (Stage)
Light-Dependent Reactions:
Take place in the Thylakoid
Uses light and water to make energy (ATP)
Gives off oxygen as waste
Light-Independent reactions(Calvin Cycle):
Takes place in the Stroma
Uses the energy (ATP) from the light reactions and carbon dioxide to make sugar (glucose)
2nd Part (Stage)

13. ATP:Chemical Energy
What is ATP?
ATP (Adenosine Triphosphate): The main chemical source of energy and energy storage for the cell.

14. What does ATP look like? Adenine Ribose 3 Phosphate groups
ATP is like a Fully charged Rechargable Battery

15. ATP:Chemical Energy How does the Cell get energy from ATP?
The cell removes a phosphate group to release energy converting it to ADP (Adenosine Diphosphate).
Cell adds the phosphate back when it needs to store energy again.

16. What does ADP look like? Adenine Ribose 2 Phosphate groups
ADP is like a Dead Battery

17. Photosynthesis Flipbook
Be Creative with your Design
Must have color!
Front (closed)
Inside Flipbook (opened up)
Light
Dependent
Photosynthesis
Inputs:
Outputs:
Takes Place in:
Inputs:
Outputs:
Takes Place in:
Light
Dependent
Reactions
Light
Independent
Reactions
(Calvin Cycle)
Draw and Label everything!
Back (closed)
Photosynthesis Equation
(Reactants) (Products)

18. Sunlight consists of a spectrum of colors, visible here in a rainbow

19. Light-Dependent Reactions
Enzymes split water molecules releasing electrons
Light energy absorbed by the chlorophyll energizes the electrons.
The energy is used to convert ADP into ATP.

20. Light-Independent Reactions: “The Calvin Cycle”
ATP and NADPH from the light reactions supply the energy for the Calvin Cycle
6 molecules of Carbon Dioxide (6CO2) are converted into 1 glucose (C6H12O6).

21. Bell Ringer: What are the reactants of the P.S. Equation?
What are the products of the P.S. Equation?
Why are plants green?
How does the cell get it’s energy from ATP
What is the P.S. equation?

22. Pre-Quiz: What are the reactants of the P.S. Equation?
What are the products of the P.S. Equation?
Why are plants green?
How does the cell get it’s energy from ATP
What is the P.S. equation?

23. What is NADPH?
When sunlight excites the electrons in the chlorophyll, the electrons gain a ton of energy.
They are so high energy, that the plant needs something to carry them around.
The carrier molecule is NADP+.
NADP+ carries two electrons becoming NADPH

24. A closer look at the Light-Dependent Reactions
SKIP
Hydrogen
Ion Movement
Photosystem II
Chloroplast
ATP synthase
Inner
Thylakoid
Space
Thylakoid
Membrane
Stroma
Electron
Transport Chain
Photosystem I
ATP Formation

25. SKIP

26. A closer look at the Calvin Cycle
SKIP
CO2 Enters the Cycle
Energy Input
ChloropIast
5-Carbon
Molecules
Regenerated
6-Carbon Sugar
Produced
Sugars and other compounds

27. Factors Affecting Photosynthesis
Water Shortages can slow or stop photosynthesis
Light Intensity affects the rate of photosynthesis
Rate increases as light intensity increases until it reaches a certain maximum rate and then it levels off.
Temperature affects the rate of photosynthesis
Photosynthesis depends on enzymes that function in a certain temperature range (0-35 degrees Celsius). Temperatures above or below this cause photosynthesis to slow or stop.

28. Summary Light Dependent Input: Light, Water, NADP, ADP
Output: NADPH, ATP and Oxygen
Takes Place In: Thylakoid
Summary: An enzyme splits water supplying electrons. The electrons are energized by the sun and the energy is stored in ATP and NADPH. Oxygen is released as waste.
Light-Independent (Calvin Cycle)
Input: ATP, NADPH, and carbon dioxide
Output: sugar(glucose), ADP, NADP
Takes Place In: Stroma
Summary: Carbon Dioxide is converted to sugar using the energy stored in ATP and NADPH.