Question

Easy question, 30 min timed assignment, please answer ASAP, thanks.

1. Glycerol from hydrolysis of triacylglycerols enters gluconeogenesis at. a. glyceraldehyde-3-phosphate. b. dihydroxyacetone phosphate. c. 1,3-bisphosphoglycerate. d. 3-phosphoglycerate. e. 2-phosphoglycerate. or tissue prefers to use ketone bodies such as acetoacetate as a source of fuel instead of glucose? a. heart muscle c. brain d. liver e. stomach b. adrenal cortex 3. The key enzyme in glycogen degradation is a. glycogen phosphatase. b. glycogen hydrolase. c. glycogen phosphorylase A d. glycogen synthase. e. glycogen phosphorylase B. When the hepatocyte is glucose and energy rich a. is transported from the mitochondrial matrix into the cytoplasm. 4. citrate b. slows glycolysis. c. stimulates acetyl-CoA carboxylase. d. balances the rate of glycolysis with the rate of acetyl-CoA utilization by the TCA Cyele and lipogenesis. e. all of the above. Regulation of fatty acid synthesis in humans is affected by all of the following EXCEPT: a. malonyl-CoA binding to carnitine acyltransferase I allosterically inhibits the enzyme. b. c. high cellular concentrations of unsaturated fatty acids (2 &23) stimulate the synthesis of the S. citrate stimulates acetyl-CoA carboxylase. enzymes involved in fatty acid biosynthesis. insulin stimulates the polymerization and activation of ATP-citrate lyase. glucagon promotes phosphorylation and inactivation of acetyl-CoA carboxylase. d. e. The enzyme pyruvate carboxylase a. is subject to allosteric control b. is necessary for the TCA Cycle as well as gluconeogenesis c. catalyzes a reaction that requires ATP d. is activated by acetyl-CoA e. is all of the above. The synthesis of phosphoglycerides and triacylglycerols share the common intermediate: a. CDP-choline. d. phosphatidate e. phosphatidate phosphatase. b. CDP-diacylglycerol. c. phosphoethanolamine.

Answer 1