Final answer:
The correct pathway that shows the relationships between ATP, ADP, chemical bonds, and energy is option 2: ATP → ADP + P + energy. This represents the hydrolysis of ATP which releases energy used by the cell for work.
Step-by-step explanation:
The question revolves around identifying which pathway correctly shows the relationships between ATP, ADP, chemical bonds, and energy. Given the choices, the correct pathway is option 2. This is because ATP, when it undergoes hydrolysis, breaks the high-energy bond between its second and third phosphate groups, releasing a molecule of adenosine diphosphate (ADP), a lone phosphate group (P), and energy. This exergonic reaction is utilized by cells for performing work. Conversely, ATP synthesis from ADP and inorganic phosphate (P) requires an input of energy, reflecting an endergonic reaction.