1. Cellular Respiration Catalyst:
What happens in photosynthesis? You may either use English, or scientific symbols.
Please label which molecules are reactants, and which molecules are products.
Cells cannot use glucose directly. What do they need to turn it into to do work?
This one may be a doozy.
Write in complete sentences!
Don’t talk during the Catalyst!

2. By the end of today, SWBAT…
Objectives
By the end of today, SWBAT…
Explain how photosynthesis is related to cellular respiration.
Describe how a ray of sunshine ultimately becomes the ATP that powers YOUR cells.
This one may be a doozy.

3. Let’s Take A Step Back… Cells need energy to do work.
They get their energy from something called ATP.
Where is energy stored in ATP?
How is it released?
What happens to ATP when we break a bond?
Second-level bullets are CFUs. Answers: bonds between phosphates. Break one of the bonds/break one of the phosphates off. Becomes ADP.

4. Man, Mr. J, This Flowchart Rocks
Photosynthesis
Water + Carbon Dioxide
Glucose + Oxygen
Let’s bring it back to the big picture for a second. Today’s lesson zeroes in on the cellular respiration part of the flowchart.
Remember, photosynthesis produces glucose (sugar). And glucose is sweet; but we can’t use it to do cellular work. And that’s why we need…
Cellular Respiration
Energy (ATP)

5. Cellular Respiration Remember Monday?
Key Point #3: Cellular Respiration converts the chemical energy in glucose into chemical energy in ATP.
CR occurs in the mitochondria
Plant AND animal cells
This is recap from Monday.

6. Cellular Respiration C6H12O6 + 6O2 6CO2 + 6H2O + ATP REACTANTS
Key Point #1: Cellular respiration takes glucose (sugar) and oxygen and turns it into carbon dioxide, water, and ATP.
Just like photosynthesis, there’s an equation for cellular respiration…
Each term appears one at a time. Do a think-aloud. “So I know I have glucose… (C6H12O2 appears) + oxygen (6O2 appears) and it turns into (arrow appears)… etc.”
So it’s through cellular respiration that cells actually get ATP, which is what they can use to do work!
C6H12O6
+ 6O2
6CO2
+ 6H2O
+ ATP
REACTANTS
PRODUCTS

7. What Do You Notice…? 6CO2 + 6H2O + sun  C6H12O6 + 6O2
Photosynthesis:
6CO2 + 6H2O + sun  C6H12O6 + 6O2
Cellular respiration:
C6H12O6 + 6O2  6CO2 + 6H2O + ATP

8. Opposites!
Key Point #2: Photosynthesis and cellular respiration are opposites
The reactants in photosynthesis are the products of cellular respiration.
The reactants in cellular respiration are the products of photosynthesis.
CFU: what type of energy does photosynthesis use? (Sunlight) What type of energy does cellular respiration use? (ATP)

9. Except… With one IMPORTANT DIFFERENCE…
Photosynthesis and cellular respiration use different types of energy
CFU: photosynthesis turns what type of energy into what type of energy? (solar --> chemical)
Cellular respiration turns what type of energy into what type of energy? (chemical --> chemical)
That’s the big difference!!!

10. Man, Mr. J, This Flowchart Rocks
Photosynthesis
Water + Carbon Dioxide
Glucose + Oxygen
Let’s look at this again. It’s a closed loop except for the energy inputs and outputs. Sunlight (solar energy) goes in, ATP (chemical energy) goes out. DIFFERENT TYPES OF ENERGY.
The whole point of this loop is to convert SOLAR ENERGY that cannot be used directly into CHEMICAL ENERGY that can be used directly by our cells! Make sure to hit on this slide that without the sun, we would have no energy, and therefore could not do ANYTHING!!!
Cellular Respiration
Energy (ATP)

11. Who Does What?
Key Point #3: Plants do photosynthesis AND cellular respiration. Animals only do cellular respiration.
Plants use sunlight to make glucose (photosynthesis), then use glucose to make ATP (cellular respiration).
Animals can only use glucose to make ATP.
So… if animals can’t make their own glucose… where do they get it from?
Emphasize: plant cells do both photosynthesis AND cellular respiration. So many kids think that

12. EATING FOOD!!!
Seriously, holy shit.
Duh.

13. Cellular Process Jumble
We as a class are going to act out these two processes.
We need to have 6 CO2
We need to have 6 O2
We need to have 6 H20
We need to have 1 reaction sign
We need to have 1 glucose
We need to have 1 Sun
We need to have 1 ATP

14. Cellular Respiration Flow Charts
Cut out the squares.
Write the name (in English) of each square under its chemical symbol.
Organize the squares into the equation for photosynthesis.
Balance it!!!
Decorate the REACTANT squares in warm colors (red, yellow, orange)
Decorate the PRODUCT squares in cool colors (blue, green, purple)
Yay for activities! You probably should make a few extra copies since I’m sure some will mess up and they’ll have to start over.

15. Mini-Lab
Question: What will happen if we try to grow basil in a room with almost no sunlight?

16. Independent Work Time Work on the study guide for the quiz
If you finish early, study!

17. Key Point Wrap-Up C6H12O6 + 6O2  6CO2 + 6H2O + ATP
Key Point #1: Cellular respiration takes glucose (sugar) and oxygen and turns it into carbon dioxide
C6H12O6 + 6O2  6CO2 + 6H2O + ATP
Key Point #2: Photosynthesis and cellular respiration are opposites
Key Point #3: Plants do photosynthesis AND cellular respiration. Animals only do cellular respiration.

18. Which types of cells do cellular respiration?
Exit Questions
Which types of cells do cellular respiration?
Describe (briefly!) how energy in sunlight becomes ATP. Think: photosynthesis and cellular respiration!
Write in complete sentences!
Don’t talk during the Exit Question!