Redox reactions form the basis of many fundamental processes of life. Without them, neither cellular respiration nor ...

Reduction is the gain of electrons by a substance. It is also the loss of oxygen from a substance. For example, copper(II) oxide can be reduced to form copper when it reacts with hydrogen: ...

and by hydrogen bonding. Redox potentials for [Fe-S] clusters range from greater than 500 mV to less than −500 mV, a range larger than for any other simple redox cofactor. A single protein can ...