The energy generated by the movement of electrons is used to pump electrons across the inner mitochondrial membrane to an area of higher concentration. 17. Where do these protons (H+) come from? The originally came from a glucose molecule and were carried to the electron transport chain by NADH and FADH2.
The answer would be glucose molecule.
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Mg is a metal. Under ordinary conditions it will not form a diatomic molecule. The other 3 are non metals. They come from the right side of the periodic table and they willl form diatomic molecules.
It is a solution where a solute cannot dissolve anymore into the solvent.
