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Airida [17]
4 years ago
5

Protons are pumped across the mitochondrial inner membrane as electrons are transferred through the mitochondrial electron trans

port chain. Which of the following statements about proton pumping are correct?
A.Protons are pumped into the matrix of the mitochondria.B.The NADH dehydrogenase, cytochrome b-c1, and cytochrome oxidase complexes all pump protons across the membrane.C.The pH inside the mitochondrial matrix is higher than in the intermembrane space.D.The mitochondria use the proton gradient to synthesize ATP.
Biology
1 answer:
maxonik [38]4 years ago
7 0

Answer: B, C and D

Explanation:

Option A is wrong because protons are not pumped into the matrix of the mitochondria, but rather protons are pumped from the mitochondrial matrix to the inner membrane space.

Option B is correct. The NADH dehydrogenase, cytochrome b-c1, and cytochrome oxidase complexes are all protons pumps and pump protons across the membrane.

Option C. Is correct. The pH inside the mitochondrial matrix is higher than in the innner membrane space.

Option D is correct. The mitochondria use the proton gradient to synthesize ATP by the enzyme ATP synthase.

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Answer: The idea that the earth is extremely ancient.

Explanation:

Charles Darwin was a British naturalist who worked on the organic evolution of living organisms and in his books outlined how present-day organisms evolved from earlier, different species.

Evolution is an extremely slow process. It is difficult to obtain direct evidence of evolution in action. However, scientist including Charles Darwin, have from many fields gathered a great deal of indirect evidence that supports the theory of evolution. This evidence comes from many sources which include the FOSSIL RECORDS.

The history of life on earth is recorded in fossils (remains of organisms preserved mainly in earth's sedimentary rocks). Scientist can determine the age of rocks in which fossils occurs by using RELATIVE DATING. This method give a geological time scale, showing earth's age ( as measured by dating it's rocks), and tracing the history of life on it.

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Organ systems is the answer

4 0
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Nesterboy [21]

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