AP BIOLOGY

Detailed explanation-1: -Mitochondria are membrane-bound organelles, but they’re membrane-bound with two different membranes. And that’s quite unusual for an intercellular organelle. Those membranes function in the purpose of mitochondria, which is essentially to produce energy.

Detailed explanation-2: -Mitochondria, the so-called “powerhouses” of cells, are unusual organelles in that they are surrounded by a double membrane and retain their own small genome. They also divide independently of the cell cycle by simple fission.

Detailed explanation-3: -Final answer: Organelles that are surrounded by two membranes are Nucleus and mitochondria.

Detailed explanation-4: -Chloroplasts and mitochondria are subcellular bioenergetic organelles with their own genomes and genetic systems.

Detailed explanation-5: -The organelles which provide energy for all the activities of a cell are:MitochondriaGolgi bodiesChloroplastsRibosomes.