Question

Which choice describes a common property of both the mitochondrial inner membrane and the chloroplast thylakoid membrane?

A. Transport of electrons through and electron transport chain
B. Protons are pumped across the membrane
C. The membrane contains ATP synthase
D. All of the above

Answer 1

Both the mitochondrial inner membrane and the chloroplast thylakoid membrane transport electrons through an electron transport chain, pump protons across the membrane, and contain ATP synthase. Hence the correct answer is option D

Step-by-step explanation:

Both the mitochondrial inner membrane and the chloroplast thylakoid membrane share the common property of transporting electrons through an electron transport chain. In both organelles, high-energy electrons are released from molecules like NADH and FADH2 and are transported along the electron transport chain located on the inner membrane of the mitochondria or the thylakoid membrane of chloroplasts.

As these electrons move along the chain, some of their energy is captured, and protons are pumped across the membrane, creating a proton gradient that can be used to generate ATP. Additionally, both membranes contain ATP synthase, an enzyme responsible for synthesizing ATP using the flow of protons.

Hence the correct answer is option D