Multiple Choice
Which statement accurately describes the electron transport chain in cellular respiration?
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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
ATP
B
NADH
C
Oxygen
D
Carbon dioxide
Verified step by step guidance1
Understand the context: The electron transport chain is the final stage of aerobic respiration, where electrons are transferred through a series of proteins embedded in the inner mitochondrial membrane.
Identify the role of electron carriers: NADH and FADH2 are electron carriers that donate electrons to the electron transport chain, initiating the process.
Follow the electron flow: Electrons move through complexes I, II, III, and IV in the electron transport chain, releasing energy used to pump protons across the membrane, creating a proton gradient.
Recognize the final step: At the end of the electron transport chain, electrons need to be accepted by a molecule to prevent the chain from backing up.
Identify the final electron acceptor: Oxygen acts as the final electron acceptor, combining with electrons and protons to form water, completing the process of aerobic respiration.
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