Determine if the statement is true or false considering the different metal ions, especially iron, copper, zinc, and manganese:
The mentioned metal ions do not serve a function in the ETC and ATP synthesis.
Explain your answer.

True, the mentioned metals are not present in the ETC and ATP synthesis because they are toxic and inhibit biochemical processes.

True, the mentioned metals are not present in the ETC and ATP synthesis because metals cannot be involved in organic reactions.

False, the mentioned metals are present in the ETC and ATP synthesis, mainly functioning as an energy source.

False, the mentioned metals are present in the ETC and ATP synthesis, mainly functioning as reducing and oxidizing agents.