ATP (adenosine triphosphate) is the energy-carrying molecule used in cells because it can release ... Once ATP has released energy, it becomes ADP (adenosine diphosphate), which is a low energy ...

However, mitochondria use the ATP/ADP translocator AAC to export ATP (the "energy currency" of cells) to the cytoplasm and import ADP for ATP synthesis. In contrast, chloroplasts employ an NTT ...