The outer and inner membranes of mitochondria are:

Explanation

The outer and inner membranes of mitochondria are both structurally and functionally different. The outer membrane is smooth and contains porins, allowing the passage of ions and small molecules, serving primarily as a protective boundary. In contrast, the inner membrane is intricately folded into cristae, which significantly increases the surface area and houses essential proteins for ATP production through oxidative phosphorylation. This structural design is crucial for its role in energy conversion, underscoring both structural and functional differences.Options A and D are incorrect because they imply similarities that do not exist. Option B is incorrect because it overlooks the evident structural differences between the two membranes.