The molecule that carries energy inside cells is ATP (adenosine triphosphate). ATP is often referred to as the "energy currency" of the cell because it is used to power many cellular processes. To arrive at this answer, you can recall some basic knowledge about cellular energy. ATP is made up of adenosine (adenine + ribose) and three phosphate groups. When one of the phosphate groups is broken off from ATP, energy is released, which can be used by cells to fuel various metabolic reactions. So, the correct answer is ATP.
The molecule that carries energy inside cells is ATP (adenosine triphosphate).
