Organic Compounds - ATP

1. Adenosine triphosphate (ATP) is used throughout the cell.
2. ATP provides energy for the cell to do work.
3. Adenosine monophosphate (AMP) is a monomer of RNA.
4. Adding additional phosphate groups yields an unstable molecule.
5. Negatively charged phosphates repel one another.
6. The bond is easily broken by hydrolysis.
7. ATP + H₂O ADP + PO₄^-
8. Energy yield is approximately -10 kcal/ mol
9. ATP usually gives the PO₄^- to another molecule.
10. The new molecule is said to be phosphorylated.
11. That new molecule is even more unstable and quickly does "something".
12. The ATP becomes ADP. ADP is more stable.
13. In one minute a working muscle cell uses 10,000,000 ATP molecules.
14. That is the cell's entire supply, so ADP must be recycled into ATP.
15. Even resting in bed, you use 20 kg of ATP ever 24 hours!