1. ATP-ADP Cycle

2. ATP-ADP Cycle Transformation of Energy
Energy is the ability to do work.
Thermodynamics is the study of the flow and transformation of energy in the universe.

3. ATP-ADP Cycle Laws of Thermodynamics
First law - Energy can be converted from one form to another, but it cannot be created nor destroyed.
Second law - Energy cannot be converted without the loss of usable energy.

4. ATP-ADP Cycle ATP – ADP Cycle
ATP (Adenosine Triphosphate) transfers energy from the breakdown of food molecules to cell functions
Energy is released when a phosphate group (Pi) is removed
ADP (Adenosine Diphosphate) is changed into ATP when a phosphate group (Pi) is added

5. ATP-ADP Cycle
ATP – ADP Cycle
phosphate removed

6. ATP-ADP Cycle Carbohydrates
Carbohydrates are the molecules most commonly broken down to make ATP.
not stored in large amounts
up to 36 ATP from one glucose molecule

7. ATP-ADP Cycle Lipids Lipids store the most energy.
80 percent of the energy in your body
About 146 ATP from a triglyceride

8. ATP-ADP Cycle Proteins
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

9. ATP-ADP Cycle