350
7 Chemical Equilibrium
7.70 All or nearly all of the processes in a living organism seem
to be driven by coupling with the hydrolysis of ATP. The
body of a 70-kg person contains about 50 g of ATP. 9
9 R. H. Garrett and C. M Grisham, Biochemistry, 3rd ed., ThomsonBrooks/Cole, Belmont, CA, 2004, p. 73.
The molar mass of ATP is 0.551 kg mol −1 . Find the amount
of 50.0 g of ATP in moles. Assume that the person ingests
food equivalent to 2500 kcal per day and that 40% of this
energy is available to regenerate ATP and that the
regeneration requires 35 kJ mol −1 . Estimate the number of
times that ATP is regenerated in one day.
7 Chemical Equilibrium
7.70 All or nearly all of the processes in a living organism seem
to be driven by coupling with the hydrolysis of ATP. The
body of a 70-kg person contains about 50 g of ATP. 9
9 R. H. Garrett and C. M Grisham, Biochemistry, 3rd ed., ThomsonBrooks/Cole, Belmont, CA, 2004, p. 73.
The molar mass of ATP is 0.551 kg mol −1 . Find the amount
of 50.0 g of ATP in moles. Assume that the person ingests
food equivalent to 2500 kcal per day and that 40% of this
energy is available to regenerate ATP and that the
regeneration requires 35 kJ mol −1 . Estimate the number of
times that ATP is regenerated in one day.