Adenosine triphosphate (ATP), the energy currency of the cell, is in dynamic equilibrium with adenosine diphosphate (ADP). The cell however maintains a constant 10 : 1 ratio of ATP to ADP in order to increase the strength of the exergonic hydrolysis reaction of ATP. The rate of production of ATP in the cell is about 10 million molecules per second. The steady-state number of ATP molecules in the human body is about 0.1 mol. The number of cells of a human body is approximately 1014. Avogadros number NA =6.022 × 1023 molecules mol1.
c. What is the half-life for ATP, assuming the production of ATP has stopped?
d. What is the half-life for ADP, assuming the production of ADP has stopped?