Question

Which of the following observations most strongly support the view that mitochondria contain electron transport enzymes aggregated in compact association?

• A. Mitochondria have highly folded inner wall.
• B. Disruption of mitochondria yields membrane fragments, which are able to synthesise ATP.
• C. A contractile protein capable of utilising ATP, which has been obtained from mitochondria.
• D. Mitochondria is animal embryos have tendency to concentrate in cells, which are to become locomotory structures.

Answer 1

The correct option is B Disruption of mitochondria yields membrane fragments, which are able to synthesise ATP.

In the inner membrane of the mitochondria, electrons from NADH and FADH${}_2$ go through the electron transport chain to O${}_2$, to yield water. It consists of a series of reactions that transfer electrons from donors to acceptors and couples this exchange with the transfer of H+ ions across the membrane creating an electrochemical proton gradient which drives the formation of a molecule that stores energy in the form of highly strained bonds. This energy rich molecule is adenosine triphosphate (ATP). The enzyme responsible for ATP synthesis is ATP synthase.

So, the correct answer is option B.