G for complete oxidation of glucose is -686 Kcal/Mole. According the G for ATP and number of ATP’s produced from the complete oxidation of glucose calculate the efficiency of biological oxidation of glucose by respiration. Considering caloric values of carbohydrates, fats and protein are 4 Kcal/g, 9 Kcal/g and 4 Kcal/g, respectively, how many grams of carbs and fat are needed by a marathon runner who uses a total of 2500 Kcal (30% Kcalories coming from carbs and 70% Kcalories from fat) in the run?