Mitochondria – organelles involved in the process of cellular respiration and providing the cell with energy in the form of ATP. Mitochondria can take the form of rounded bodies, rods, threads. They are formed by two membranes – external and internal, between which there is an intermembrane space. The outer membrane is smooth, it separates the contents of the mitochondria from the hyaloplasm and is highly permeable to various substances. The inner membrane is less permeable, it forms cristae – numerous folds directed inside the mitochondria. Due to cristae, the surface area of the inner membrane increases significantly. The inner mitochondrial membrane contains enzymes involved in the process of cellular respiration and ensure the synthesis of ATP. The inner space of the mitochondria is filled with a gel-like matrix. It contains various proteins, including enzymes, amino acids, DNA ring molecules, all types of RNA and other substances, as well as ribosomes. The function of mitochondria is the synthesis of ATP due to the energy released during the oxidation of organic compounds.
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