Question

q3.4. in one of the reactions in the electron transport chain, coenzyme q (i.e., \q\) transfers electrons to complex iii. which molecule is reduced and which is oxidized in this reaction? complex iii is reduced because it gains electrons, and q is oxidized because it loses electrons. complex iii is oxidized because it loses electrons, and q is reduced because it gains electrons. complex iii is reduced because it gains electrons, and q is oxidized because it loses electrons, and both are oxidized because electrons are moved from one molecule to the other.

Explanation:

Oxidation is the loss of electrons and reduction is the gain of electrons. In the electron - transport chain, when a molecule is oxidized it loses electrons and when it is reduced it gains electrons. Complex III and coenzyme Q (Q) are involved in redox reactions. If Complex III is oxidized, it loses electrons and Q is reduced because it gains those electrons.

Answer:

Complex III is oxidized because it loses electrons, and Q is reduced because it gains electrons.