1. WHAT CAN YOU DO WITH A LOT OF THIS???
Buy clothes
& shoes
Pay Bills
Go on Vacation
Save & Invest
SPLURGE!!!

2. WHAT IF YOUR WALLET
LOOKS LIKE THIS??? 
Work to get
more money

4. Today’s Objectives
By the end of today I will be able to: Describe the process of converting ATP to ADP and ADP to ATP
By the end of today I will be able to: Explain the purpose of ATP in organisms

5. Why do organisms need energy?
The cells of all
organisms need
chemical
energy in order to
do work to survive.
Why do
organisms
need energy?
(Essential Question)

6. Does food give you energy?
YES: Carbon based
macromolecules
(carbohydrates, lipids)
found in food molecules
store energy in their BONDS.
Does food give you
energy?
BUT this energy is
ONLY useable
AFTER these molecules
are BROKEN DOWN.

7. How can I
get energy
from these
‘bonds’?
Break them!

8. Let’s Review Biochemistry!
Carbohydrates
monosaccharides &
polysaccharides
Lipids
Glycerol &
3 fatty acids

9. The Main Energy Molecule
In living things is ATP!
ATP: Adenosine TriPhosphate:
The principal compound used to
store and release energy.

10. What do we consume every day that stores and releases energy? Food
ADP
ATP
Food 2.
Energy! 1. 3.
“Fully charged battery”
“Re-charge
battery”

11. How Energy is Released from ATP
The Structure of ATP
Adenine (A) Ribose (sugar)
3 phosphates
(Tri Phosphate or TP)
Energy is stored between the phosphate bonds.
When a phosphate is broken off of ATP, energy is released and becomes ADP. This is
Chemical (Kinetic) energy that can be used to do work.
How Energy is Released from ATP

12. How is energy stored in ATP?
Energy is stored in the
new phosphate
bond becoming ATP again.
This potential
energy that is stored.
(Like when you recharge
your cell phone battery)

13. CHECK FOR UNDERSTANDING
Energy in your body
ATP
Very quick energy, has a short shelf life.
“Quick Energy”
Carbohydrates (Glucose / C6H1206) Still has to be broken down to ATP
“Long-Term Storage”
Lipids
Can stay in the body for a long time

14. Copy Chart in Notes Molecule: ATP ADP Name
Adenosine Triphosphate (Tri=3)
Adenosine Diphosphate (Di=2)
Energy
& Analogy
Chemical energy is stored between the phosphate bonds.
ATP releases energy.
(Charged Battery)
Energy has been released and the ADP must gain a Phosphate. ADP stores energy
(Battery needs to recharge)

15. Answer 1-3 in your notes
2.) Explain how energy is released and stored during the ATP Cycle
Energy is released when a phosphate
breaks off of ATP. Energy is stored when
a phosphate is added to ADP
1.) Where do these molecules come from?
3.)What is the difference between the structure of ATP and ADP?
ATP has 3
phosphates
ADP has 2
ATP comes
From food we eat

16. Model the ATP/ADP Cycle
Follow the directions on your handout:
Label the pentagon’s Ribose - color GREEN
Label the pentagon/hexagon Adenine - color BLUE
Label the circles Phosphate - color RED
Using your notes, build an ATP molecule and ADP molecule.
Glue the extra phosphate to the center of the page.
Add arrows showing the phosphate going from ADP to ATP.
Label the arrow Energy Storage. Add arrows showing the phosphate moving from ATP to ADP. Label the Arrow Energy Release.

17. Explain the process… On the back side of your model
In 5-6 sentences, explain in your own words how ATP is converted to ADP. Explain where the molecules needed for ATP come from.

18. Modeling ATP & ADP Energy Cycle

19. Exit Journal # 1
Explain, in detail, how energy is stored and released and what happens in the ATP Cycle?