[Campbell Biology P.200] According to the text and Figure 8.9b, what are the direct products... | Practice Question

According to the text and Figure 8.9b, what are the direct products of ATP hydrolysis when a water molecule is added?

  • A: ADP and inorganic phosphate (P_i)
  • B: AMP and two inorganic phosphates (2 P_i)
  • C: Adenine, ribose, and three inorganic phosphates (3 P_i)
  • D: ATP and water, as the reaction is reversible.

Explanation

The text states: 'When the terminal phosphate bond is broken by addition of a water molecule, a molecule of inorganic phosphate HOPO3^2-, abbreviated as Pi throughout this book leaves the ATP, which becomes adenosine diphosphate, or ADP Figure 8.9b .' The reaction shown is ATP + H2O → ADP + Pi.