1. ADP & ATP

2. How are ATP and ADP alike?
Both have adenosine and phosphates

3. KEY CONCEPT All cells need chemical energy.

4. What Is ATP? Energy used by all Cells Adenosine Triphosphate
Organic molecule containing high-energy Phosphate bonds

5. What Does ATP Do for You?
It supplies YOU with ENERGY!

6. The chemical energy used for most cell processes is carried by ATP.
Molecules in food store chemical energy in their bonds.
Starch molecule
Glucose molecule

7. Chemical Structure of ATP
Adenine Base
3 Phosphates
Ribose Sugar

8. ATP transfers energy from the breakdown of food molecules to cell functions.
Energy is released when a phosphate group is removed.
ADP is changed into ATP when a phosphate group is added.
phosphate removed

9. Organisms break down carbon-based molecules to produce ATP.
Carbohydrates are the molecules most commonly broken down to make ATP.
not stored in large amounts
up to 36 ATP from one glucose molecule
triphosphate
adenosine
diphosphate
tri=3

10. What is the Process Called?
HYDROLYSIS (Adding H2O)
H2O

11. How Do We Get Energy From ATP?
By breaking the high- energy bonds between the last two phosphates in ATP

12. Fats store the most energy.
80 percent of the energy in your body
about 146 ATP from a triglyceride
Proteins are least likely to be broken down to make ATP.
amino acids not usually needed for energy
about the same amount of energy as a carbohydrate

13. A few types of organisms do not need sunlight and photosynthesis as a source of energy.
Some organisms live in places that never get sunlight.
In chemosynthesis, chemical energy is used to build carbon-based molecules.
similar to photosynthesis
uses chemical energy instead of light energy

14. How Does That Happen?
An Enzyme!
ATPase

15. How is ATP Re-Made? The reverse of the previous process occurs.
Another Enzyme is used!
ATP Synthetase

16. Go to
Energy and the Chemistry of Life, Part Two: Energy—ATP discovery education streaming
7:30 min