Which of the following defines the P/O ratio?
A)Pi uptake per oxygen atom by mitochondria
B)molecules of phosphate released from ATP per oxygen utilized by muscle tissue
C)ratio of atoms of phosphorus to oxygen in phosphate (Pi)
D)molecules of ATP formed per 2 electrons flowing through electron-transport chain

Question

Quizplus · Accepted Answer

The P/O ratio is defined as the number of molecules of ATP formed per 2 electrons flowing through electron-transport chain. Option A is incorrect because it describes the Pi/oxygen uptake ratio, which is not the same as the P/O ratio. Option B is incorrect because it describes the efficiency of muscle tissue in converting oxygen into ATP, not the P/O ratio. Option C is incorrect because it defines the chemical composition of phosphate, which is not relevant to the P/O ratio.

Which of the Following Defines the P/O Ratio