BIOB10H3 Chapter Notes - Chapter 5: Mitochondrion, Inner Mitochondrial Membrane, Intermembrane Space
15 Nov 2013
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Anaerobes organisms that captured and utilized energy by means of oxygen independent (anaerobic) metabolism. 2. 7 billion years ago cyanobactera carried out photosynthetic process. Over time, species evolved that were protected from damaging effects of molecular oxygen, and possessed metabolic pathways that utilized the molecule to great advantage. Incorporated oxygen into metabolism so could completely oxidize such compounds to co2 an d. Organisms became dependent on oxygen are aerobes. Mitochondria have evolved from ancient aerobic bacterium that took up residence inside. Eukaryotes used oxygen as means of energy extraction takes placed in mitochondrion cytoplasm of anaerobic host cell. Mitochondria are large enough to be seen in light microscope. Can be sausage shaped or highly branched tubular network. Occupy 15 to 20 percent of volume of liver cell. Out membrane completely encloses the mitochondrion (outer boundary) There two membranes outer and inner mitochondrial membranes.
