1. BELL RINGER What part of the plant produces Fruit?
What are the purpose of flowers?
What are pollinators?

2. BELL RINGER What is produced in photosynthesis?
Why is photosynthesis important?

3. Joke of the day

4. How do plants get energy?
Photosynthesis VIDEO
How do plants get energy?

6. Photosynthesis Equation
Energy + Carbon dioxide + water sugar oxygen
Light CO H2O C6H12O O2
Reactants Products

7. The Chloroplast Location for photosynthesis in the cell
Contains sac-like photosynthetic membranes called thylakoids contain chlorophyll
Thylakoids are arranged in stacks called grana (singular:granum)
The region outside the thylakoids is called the stroma

8. Inside a Chloroplast
STROMA
Chlorophyll
GRANUM
THYLAKOID

9. Autotrophs and Heterotrophs
Review:
Autotrophs: use energy from the sunlight to make their own food (plants)
Heterotrophs: obtain energy from foods that they consume (animals, fungi)

10. A look at Photosynthesis
Chloroplast
Water O2
Sugars
CO2
Light-
Dependent
Reactions
Calvin
Cycle
NADPH
ATP
ADP + P
NADP+
SUN

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

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

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

14. PHOTOSYNTHESIS: 2 PARTS
1st
Part
Light-Dependent Reactions:
Occur in the Thylakoid
Uses light and water to make energy in the form of ATP
Gives off oxygen as waste
Light-Independent reactions(Calvin Cycle):
Occur in the Stroma
Uses the energy from the light reactions (ATP) and carbon dioxide to make sugars (carbohydrates)
2nd
Part

15. ATP:Chemical Energy
ATP(Adenosine Triphosphate): one of the principal chemicals compound that cells use to store energy.

16. What does ATP look like?
Adenine
Ribose
3 Phosphate groups

17. What does ADP look like?
Adenine
Ribose
2 Phosphate groups

18. ATP:Chemical Energy Releasing Energy from ATP:
The energy in ATP is released when the bonds break and it is converted to ADP (Adenosine Diphosphate).
It adds the phosphate back when it needs to store energy.

19. ATP and Glucose Glucose can store 90 times the energy of one ATP
So, cells store glucose(and other carbohydrates) and use its energy to convert ADP to ATP when needed.

20. Factors Affecting Photosynthesis
Water or Carbon dioxide 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.

21. Summary Video Light Dependent Light-Independent
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
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.
Video