ATP-ADP Cycle

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.

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.

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

ATP-ADP Cycle

• ATP – ADP Cycle

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

ATP-ADP Cycle

• Lipids

– Lipids store the most energy.

– 80 percent of the energy in your body

– About 146 ATP from a triglyceride

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

ATP-ADP Cycle