1. Chemical work of the cell requires ATP. 2. ADP can be phosphorylated without energy input. 3. The release of energy by ATP is an example of endergonic reaction. 4. When ATP is hydrolyzed, energy is released. 5. Mechanical work does NOT require ATP. 6. The energy released by the ATP can be used by the cell to transport substance. 7. Motor proteins move once energy is absorbed from ATP 8. ADP and P are regenerated to ATP if energy is absorbed from a system. 9. ATP is composed of ribose, adenine and three phosphate groups. 10. A exergonic reaction absorbs energy. 11. Lipid synthesis requires ATP. 12. A sperm cell does NOT require ATP to propel flagellum. 13. muscle contraction is an example of transport work. 14. To build biomolecules such as mRNA, a cell requires ATP. 15. It is important for us to eat our meal to have sufficient energy.