Which of the following statements about the electron transport chain is true?
BIOLOGY
SAT 2021
Which of the following statements about the electron transport chain is true?
- A. The electron transport chain is found only in plants.
- B. The electron transport chain is found on the inside of the inner mitochondrial membrane.
- C. The electron transport chain uses glucose as its final electron acceptor.
- D. The electron transport chain is used to transport soluble proteins from one organelle to the next.
Correct Answer: B. The electron transport chain is found on the inside of the inner mitochondrial membrane.
Explanation
The electron transport chain is found on the inside of the inner mitochondrial membrane. It is not used to transport proteins; instead, it generates ATP to be used as an energy source by the cell. The electron transport chain is found in plants and animals (though the one found in plants operates very differently than the one found in animals). Oxygen is the final electron acceptor, not glucose.
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