ATP stands for what?

• A. Adenosine diphosphate
• B. Amino acid phosphate
• C. Adenosine monophosphate
• D. Adenosine triphosphate

Answer: (D)

ATP stands for Adenosine triphosphate, the molecule cells use as their energy currency. It has three phosphate groups attached to adenosine, and the bonds between those phosphates store a lot of energy. When a cell needs energy, a phosphate is removed, converting ATP to ADP and inorganic phosphate and releasing energy to power processes like muscle movement, active transport, and building molecules. The other names refer to different molecules: Adenosine diphosphate is ADP (two phosphates), Adenosine monophosphate is AMP (one phosphate), and Amino acid phosphate isn’t a standard nucleotide name. So the three-phosphate form correctly names the energy-carrying molecule.