1.What key metabolic substance is formed directly from catabolism of all three major classes of foods (carbohydrates, lipids, and proteins)?
2. What does it mean when two reactions are coupled? How the following reaction (G = -11.8 kcal/mol) could be coupled with formation of ATP from ADP and phosphate?
Write the net reaction for the coupled reaction. What is the overall G for the coupled reaction?
3. What is the name of the functional group that reacts with water in the above starting material?
4. NAD+ is a coenzyme for dehydrogenation for three reactions in the citric acid cycle. A. When a molecule is dehydrogenated, is NAD+ oxidized or reduced? B. Is NAD+ an oxidizing agent or a reducing agent? C. What is NAD+ converted to after the dehydrogenation process?
5. What is the main function of the citric acid cycle? What happens to the carbons of the acetyl part of acetylCoA during the citric acid cycle?