EVERYDAY SCIENCE

Detailed explanation-1: -Mitochondria are surrounded by a double-membrane system, consisting of inner and outer mitochondrial membranes separated by an intermembrane space (Figure 10.1). The inner membrane forms numerous folds (cristae), which extend into the interior (or matrix) of the organelle.

Detailed explanation-2: -The inner membrane allows for the transport of hydrogen ions into the inter-membrane space, while the outer mitochondrial membrane prevents their escape. The two membranes working in conjunction build up a lot of potential energy in the form of the charge possessed by the ions within the inter-membrane space.

Detailed explanation-3: -Mitochondria are unusual organelles. They act as the power plants of the cell, are surrounded by two membranes, and have their own genome. They also divide independently of the cell in which they reside, meaning mitochondrial replication is not coupled to cell division.

Detailed explanation-4: -The nucleus is surrounded by a double membrane, known as the nuclear envelope, with nuclear pores. Mitochondria-this is the site of aerobic respiration within the cell. They are surrounded by a double membrane (envelope), with the inner membrane folded into finger-like projections called cristae.

Detailed explanation-5: -Mitochondria are double-membraned organelles that contain their own ribosomes and DNA. Each membrane is a phospholipid bilayer embedded with proteins.