Here's why:
* High-energy bonds: The phosphate groups in ATP are linked by phosphoanhydride bonds. These bonds are considered "high-energy" because they store a significant amount of energy due to the strong electrostatic repulsion between the negatively charged phosphate groups.
* Hydrolysis: When ATP is hydrolyzed (broken down by the addition of water), a phosphate group is removed, releasing a substantial amount of energy. This energy is then used to power various cellular processes, like muscle contraction, active transport, and biosynthesis.
Let me know if you'd like more details on how ATP is used in cellular processes!
