______ is known as the energy currency of the cell.

ATP

The correct answer is Option (3)- ATP

ATP (Adenosine Triphosphate) is known as the energy currency of the cell.

Explanation:

ATP is a molecule that stores and transports energy within cells. It is composed of an adenine base, a ribose sugar, and three phosphate groups. The energy stored in the high-energy phosphate bonds of ATP can be readily released and used to fuel various cellular processes, including metabolic reactions, synthesis of molecules, and mechanical work.

During cellular respiration, energy from the breakdown of nutrients is used to synthesize ATP. The energy stored in ATP molecules is then used by the cell to carry out its functions and maintain essential processes. ATP is often referred to as the "energy currency" because it acts as a common energy carrier that powers cellular activities.