The inner membranes of both mitochondria and chloroplasts are folded into various arrangements.What is the advantage of having a folded membrane rather than a simple interior membrane that follows the same oval shape as the exterior membrane?
A) The folds in the membranes are a physical barrier against compounds attempting to enter the organelle.
B) The folds allow for more surface area for the chemical reactions that occur across the inner membranes.
C) The folds allow these organelles to interact more efficiently with Golgi bodies.
D) The folds cause a necessary change in the organelle's internal pH.

Question

Quizplus · Accepted Answer

The folds in the inner membranes of both mitochondria and chloroplasts increase the surface area available for the chemical reactions that occur across these membranes. This means that these organelles can produce more ATP (in mitochondria) and more sugars (in chloroplasts) due to the larger area for enzyme-catalyzed reactions. This is an efficient way to maximize the production of energy and nutrients in these organelles.

The Inner Membranes of Both Mitochondria and Chloroplasts Are Folded