Please answer the following questions: 1. Which vitamin is a coenzyme to the pyr
ID: 268772 • Letter: P
Question
Please answer the following questions:
1. Which vitamin is a coenzyme to the pyruvate dehydrogenase complex? A. pantothenate B. thiamine pyrophosphate C. niacin D. riboflavin E. All of the answers are correct 2. Why is acetyl-CoA a good gluconeogenic precursor? A. There is a plentiful supply from the degradation of fatty acids B. A plentiful supply of citrate synthase combines acetyl-CoA with oxaloacetate efficiently. C. AMP levels promote citrate synthase D. It is not a gluconeogenic precursor E. The high-energy thioester bond between acetyl and the CoA drives the reaction 3. What is the metabolic use of ketogenic amino acids? A. All are used to produce a-ketoglutarate for the Kreb's cycle B. All are used to produce ketone bodies. C. All are used to produce the keto forms of carbohydrates that substitute for glycolytic intermediates D. All are used as one-carbon donors for the formation of ?-ketoacids. E. All are used in ketogenesis, the formation of ketone-containing amino acids 4. How is the urea cycle regulated? A. A diet rich in carbohydrates and lipids results in downregulation of the five urea cycle enzymes. B. Arginine stimulates the urea cycle by activating N-acetylglutamate synthase C. Starvation or ingestion of protein-rich diets upregulates urea cycle enzymes. D. Carbamoyl phosphate synthetase I is allosterically regulated by N-acetylglutamate E. All of the answers are correct 5. What spec electron transport chain? A. plasmalogen B. diacylglycerol C. lactosylceramide D. cardiolipin E. phosphatidylinositol ific lipid is a critical component of the inner mitochondrial membrane, neces sary for function of theExplanation / Answer
1..D all of the above
2. D. It is not a glucogenic precursor. Lactate, amino acids and glycerol are the major precursor
3. B. All are used to produce ketone bodies.
4. D. All of the above
5. Phosphatidylinositol