The Inner Membranes of Both Mitochondria and Chloroplasts Are Folded

question 5

Multiple Choice

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 for compounds that attempt 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 organelles' internal pH.

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