Find the specific reactions in which water is consumed during respiration, and list them below. In one of them, the water may escape your notice at first, but you'll find it if you think carefully about what is actually happening. In every case the mitochondria are tightly coupled and have an ample supply of NADH and inorganic phosphate. The O2 concentration in the suspension of mitochondria is plotted on the vertical axis. When needed, a scale is provided.
Time is on the horizontal axis.
The magnitude of the time scale is unimportant, but is on the order of minutes. The relevant properties of these reagents can be found in your text or lecture handouts. Ascorbate is a 2 electron reductant. That is, one mole of ascorbate reduces two moles of cytochrome c . If the amount of a reagent is not specified in the problem, the amount does not matter.