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Cellular respiration is a set of metabolic reactions and processes that take place in the cells of organisms to convert biochemical energy from nutrients into adenosine triphosphate (ATP), and then release waste products.
Fat cannot be oxidized to produce energy in the absence of oxygen. 3. Energy input required to initiate fat oxidation. 4. The carbon atoms of fat cannot be used by any pathway of the human body in order to. maintain blood glucose levels for use by other tissues such as the brain. (i.e. fat cannot. be converted to glucose) - Used when intracellular levels of glucose and ATP are low. - Glycogenolysis - degradation of glycogen.