Multiple Choice
Where is the electron transport chain located in eukaryotic cells?
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8. Respiration
Electron Transport Chain
Multiple Choice
What is the final electron acceptor in the electron transport chain during aerobic respiration?
A
FAD
B
Oxygen
C
Carbon dioxide
D
NAD+
Verified step by step guidance1
Understand the context: The electron transport chain (ETC) is the final stage of aerobic respiration, occurring in the inner mitochondrial membrane, where electrons are transferred through a series of protein complexes.
Identify the role of electron carriers: During the ETC, electron carriers such as NADH and FADH2 donate electrons to the chain, which are passed through various complexes.
Recognize the purpose of the ETC: The main goal of the ETC is to create a proton gradient across the mitochondrial membrane, which is used to produce ATP through oxidative phosphorylation.
Determine the final electron acceptor: As electrons move through the ETC, they eventually need to be accepted by a final molecule to prevent a backup of electrons.
Identify the final electron acceptor: In aerobic respiration, oxygen (O2) serves as the final electron acceptor, combining with electrons and protons to form water (H2O).
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