13. Throughout the chapters, the authors make several references to ATP and its "energy" (see case study 2.2 in the book). I feel that you, as biochemistry students, could help me understand a lot more about ATP. Please come up with an analogy that explains ATP and how it is used in biological reactions. As an example, I could compare ATP to money. I would want to say how that money was used(spent/saved), if it was ever wasted, and where it got Its actual value. I used money as an example. Please be original in your answer (do not use money). The more your analogy explains ATP at the physical biochemistry level, the better. The more creative your analogy, the better