41. Which one of the following statements about human mitochondria is true?
1. Mitochondrial genes are inherited from both maternal and paternal sources.
2. The mitochondrial genome is subject to mutations.
3. rRNA and tRNA are imported from the cytoplasm and used in mitochondrial protein synthesis.
4. In normal mitochondria, the rate of NADH consumption (oxidation) will be very low if the ATP synthase is inhibited, but increase when an uncoupler is added.
5. A drug that inhibits the ATP synthase in the mitochondrion will also inhibit the flow of electrons down the chain of carriers.
(A) 1 and 4.
(B) 2 and 3.
(C) 4 and 5.
(D) 2, 3, and 5.

(E) 2, 4, and 5.

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