8. The skeletal muscle, by virtue of its mass, is a major consumer of glucose, e

Question

8. The skeletal muscle, by virtue of its mass, is a major consumer of glucose, even in the resting state. During exercise, skeletal muscle can increase its energy utilization by A. 10-fold B. 100-fold, C. 1000 fold D. 10,000-fold 9. The nonoxidative reactions which of the following pathways? A the Calvin cycle B. the Cori cycle C. the Krebs cycle D. the electron transport chain of the pentose phosphate shunt are most closely analogous to the reactions in 10. Muscle contraction, which uses glycogen as a fuel source, is triggered by a rise of A. Fe2+ B. Mn2+ C. Ca2+ D. Mg2+. in the cytosolic concentration True/False 11. True or false? Virtually all glycogen breakdown is accomplished by the removal of glucose residues from the nonreducing end of glycogen in a reaction catalyzed by ghycogen phosphorylase: (glucosen Pigucose]n-1 + glucose-1-P unit of the branch point is removed by 12. True or false? When glycogen is being broken down, the last glucosyl a reaction catalyzed by glucosidase. 13. True or false? A rise in blood glucose level as a result of a meal triggers the release of insulin from the pancreatic ? cells. In both muscle and liver, insulin leads to decreased glycogen synthesis. 14. True or false? None of the reactions in gluconeogenesis are reversals of the near equilibrium steps of glycolysis. 15. True or false? Like glycolysis, the pentose phosphate shunt occurs in virtually all cells in the body 16. True or false? The nonoxidative stage of the pentose phosphate shunt converts ribulose-5-P (RuSP) to fructose-6-P and glyceraldehyde-P. 17. True or false? During exercise, blood flow is shunted away from muscle and towards the liver, because the liver can convert excess lactate (accumulated by muscle glycolysis) into glucose by liver g

Explanation / Answer

8. B) 100 fold

This is referred to as the resting exercise transitions. When the skeletal muscle transits from the resting state to the exercise state, it increases its consumption of energy by as high as 100 fold.

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