Question

Which bond of ATP is considered high energy?

Answer 1

The two-terminal phosphate bonds are considered high energy in ATP.

• On hydrolysis, ATP produces ADP and AMP, with the release of energy.
  $\mathrm{ATP}\to \mathrm{ADP}+\mathrm{Pi}(\mathrm{inorganic}\mathrm{phosphate})+\mathrm{Energy}$

$\mathrm{ATP}\to \mathrm{AMP}+\mathrm{PPi}(\mathrm{inorganic}\mathrm{pyrophosphate})+\mathrm{Energy}$

• The energy released in cellular respiration is stored as ATP and ATP is hydrolyzed to ADP to get energy whenever required. Therefore, ATP is used as an energy currency in the living system.