Mitochondrias

The mitochondria are organeles responsible for supplying most of the energy required for the cellular activity (cellular respiration). They give power to the cell and synthesize ATP at the expense of metabolic fuels (glucose, acids, fatty and amino acids). The mitochondria has an outer membrane permeable to ions, metabolism and many polypeptides. That is because it contains proteins that form pores called porins VDAC (voltage-dependent anion channel), which allow the transit of molecules of up to 10 k mass and a diameter of approximately 2 nm