Question

Whose surface area is increased in mitochondria? Is it organelle's or inner membrane's surface area is increased ??

Answer 1

inner membrane. because it is in zig zag shape which increase the surface area.

Answer 2

The inner mitochondrial membrane contains all of the components of the electron transport system and the ATP synthase complex; it also has many invaginations, called cristae, that greatly increase its total surface area.