How do ATP, ADP, and AMP differ in their roles and functions within cellular energy metabolism?

ATP, ADP, and AMP are molecules involved in cellular energy metabolism. ATP is the main energy currency in cells, providing energy for various cellular processes. ADP is formed when ATP loses a phosphate group, releasing energy in the process. AMP is formed when ADP loses another phosphate group. In summary, ATP stores energy, ADP releases energy, and AMP is a lower-energy form of ADP.