Multiple Choice
In a redox reaction, which answer best describes the reducing and oxidizing processes?
6. Chemical Quantities & Aqueous Reactions
Redox Reactions
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In the context of redox reactions, what molecule is the final electron acceptor at the end of the electron transport chain?
A
Oxygen
B
FAD
C
Water
D
NAD+
Verified step by step guidance1
Understand the concept of the electron transport chain (ETC) in cellular respiration, which is a series of complexes that transfer electrons from electron donors to electron acceptors via redox reactions.
Recognize that the electron transport chain is located in the inner mitochondrial membrane and plays a crucial role in the production of ATP through oxidative phosphorylation.
Identify the role of electron carriers such as NADH and FADH2, which donate electrons to the electron transport chain, initiating the process.
Recall that as electrons move through the chain, they pass through a series of protein complexes and coenzymes, releasing energy that is used to pump protons across the mitochondrial membrane, creating a proton gradient.
Conclude that at the end of the electron transport chain, the final electron acceptor is oxygen (O₂), which combines with electrons and protons to form water (H₂O), completing the process of oxidative phosphorylation.
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