The following reaction is part of the electron transport chain. Complete the reaction and identify which species is reduced. The abbreviation Q represents coenzyme Q. Use the appropriate abbreviation for the product. FADH2 + Q →

The reactant that is reduced is:

The reactant that is reduced is

Explanation:

The complete equation is as below:

Recall that oxidation involves the gain of electrons while reduction involves the loss of electrons.

In the above reaction, loses electrons to coenzyme Q and becomes reduced to FAD, hence the oxidizing agent. Coenzyme Q gains electrons and becomes oxidized to , hence the reducing agent.

In order words, is reduced while coenzyme Q is oxidized.