Question

Organic molecules, such as ATP, store energy within the chemical bonds that hold the atoms of the molecule together. For example, in ATP an enormous amount of chemical energy is stored in the bonds that link the phosphate groups together.

Identify the statement below that is true about how organisms access and store the energy within these bonds.

(1 point)
Responses

Breaking the bonds that link the phosphate groups together in ATP requires energy from the cell.
Breaking the bonds that link the phosphate groups together in ATP requires energy from the cell.

Forming the bonds to link the phosphate groups together in ATP releases energy for the cell to use.
Forming the bonds to link the phosphate groups together in ATP releases energy for the cell to use.

Breaking the bonds that link the phosphate groups together in ATP releases energy for the cell to use.
Breaking the bonds that link the phosphate groups together in ATP releases energy for the cell to use.

No energy is lost during the formation of the phosphate bonds of ATP during cellular respiration.

Answer 1

Breaking the bonds that link the phosphate groups together in ATP requires energy from the cell.

Explanation: Bond cleavage is an energy‑requiring step; ATP hydrolysis is overall exergonic because the new bonds formed (ADP + Pi + water interactions, resonance stabilization of Pi) release more energy than was needed to break the original phosphate bond.