1. Photosynthesis & Respiration

2. Photosynthesis

3. Photosynthesis Vocabulary
Photosynthesis- A process by which plants convert sunlight, water, and carbon dioxide into food energy (sugar), oxygen and water.
Chloroplast- An elongated cell organelle containing chlorophyll where photosynthesis takes place.
Chlorophyll- A green molecule which uses light energy from sunlight to change water and carbon dioxide gas into sugar and oxygen

4. Photosynthesis Equation
H20 + CO2 + light  O2 + glucose
Reactants
Products

5. The chlorophyll absorbs the sunlight.
Chlorophyll is the green pigment inside the chloroplasts of plant cells that makes leaves green!

6. Chlorophyll then uses sunlight to change water, carbon dioxide and, nutrients from the soil.
CO2

7. The chlorophyll processes the ingredients and to make sugar (plant food) and oxygen.
Sugar + O2

8. Animals make the CO2 plants need Plants make the O2 animals need
But, what about animals?
Animals make the CO2 plants need
Plants make the O2 animals need

9. Respiration

10. Respiration Vocabulary
Respiration- The process by which the chemical energy of "food" molecules is released and changed into ATP.
Mitochondria- Rod-shaped organelles with a double membrane which converts the energy stored in glucose into ATP for the cell.

11. Do you notice something about this equation?
Respiration Equation
O2 + glucose  H20 + CO2 + ATP
Reactants
Products
Do you notice something about this equation?

12. Animals & Plants Rely On Each Other
Animals use:
Sugar (from producers/plants)
Oxygen (from producers/plants)
Plants use:
Carbon dioxide (from animals)

13. The mitochondria change the O2 and sugars (food)

14. Into CO2, H2O, and ATP
ATP

15. What about light & ATP? Comparing Equations Photosynthesis Equation:
H2O + CO2 + light  O2 + glucose
Respiration Equation:
O2 + glucose  H2O + CO2 + ATP
What about light & ATP?

16. Conservation of Energy
The Law of Conservation of Energy says…
1.) Energy cannot be created
2.) Energy cannot be destroyed
Therefore…energy can only be transformed into other types of energy.

17. WhAt’S hApPeNiNg To ThE eNeRgY??
In photosynthesis:
Electromagnetic energy (sun)  Chemical Energy (sugar)
In respiration:
Chemical energy (sugar)  Different type of Chem. Energy (ATP)

18. We will visit ATP again in a few weeks during our CELL UNIT!
So…WHAT IS ATP?
ATP- Adenosine triphosphate
A high energy molecule that serves as the energy currency of the cell
We will visit ATP again in a few weeks during our CELL UNIT!
ATP