Kinesiology 2230A/B Lecture Notes - Lecture 2: Phosphofructokinase, Glycogen, Metabolic Pathway
15 Sep 2016
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Kcals per litre of oxygen vs. kcals per gram: Carbs use 5. 05 kcals/lo2 but stores only 4. 1. Fats yield only 4. 69 kcals/lo2 but stores 9. 4 kcal/g it stores less from oxygen: this is because it requires more oxygen to metabolize fats than carbs (fats are broken down aerobically) There are significant differences in the efficiency of oxygen utilization when looking at fat vs. carbs (fats are less efficient when they are metabolized using oxygen and carbs are more efficient) Free energy change is the part of the total energy change in a reaction that is capable of doing work (free energy change is delta g) When energy is released g is considered negative and the reaction is exergonic and the reaction may occur spontaneously. When g is negative then you are exciting energy (creating energy). When energy is added g is considered positive and the reaction is endergonic. Endergonic reactions can only occur when coupled with to exergonic reactions.
