Chapter 12, Problem 1CS

If vitamins are neither biochemically similar compounds nor sources of energy, what characteristics distinguish vitamins as a distinct group of nutrients? What are the water-soluble and the fat-soluble vitamins?

Describe the process of chemical digestion of our three major macronutrients, carbohydrates, proteins and fats, as one travels down the human digestive tract. Where does chemical digestion begin for each one of these? Where does chemical digestion continue for each one of these three, and where is this process completed? In your description, please include the enzymes involved

Glucose can be made from oxaloacetate during gluconeogenesis, but if oxaloacetate concentrations are decreased,what other substance can be used to make glucose? How might this contribute to increased fat loss?