AP BIOLOGY

Detailed explanation-1: -The inner membrane of mitochondria is organized in two morphologically distinct domains, the inner boundary membrane (IBM) and the cristae membrane (CM), which are connected by narrow, tubular cristae junctions.

Detailed explanation-2: -The double membrane found in mitochondria and chloroplasts appears to be a relic of the absorption of the prokaryotic bacteria by the eukaryotic host cells. The inner membrane, which now contains numerous folds, apparently came from the bacterial membrane, while the outer membrane came from the host cell itself.

Detailed explanation-3: -The inner mitochondrial membrane consists of numerous copies of a protein molecule termed the F0F1ATPase. It is also known as ATP synthase. It has two components: the F0 component extends the membrane and creates a pathway for protons to enter the matrix.

Detailed explanation-4: -Mitochondria are bounded by a double-membrane system, consisting of inner and outer membranes. Folds of the inner membrane (cristae) extend into the matrix.