This podcast covers the key catabolic pathways in the mitochondria, including : 1. The 3 catabolic pathways of carbohydrates and fatty acids; 2. The roe of Acetyl CoA as a common metabolite and its dietary sources; 3. The TCA cycle and its energy output; 4. Fatty acid beta oxidation and its energy output; and 5. A comparison of energy (ATP/ CO2) output from glucose, fatty acids, ketone bodies, and amino acids.