During prolonged fasting, which of the following liver enzymes has upregulated activity?A.Glycogen synthaseB.Pyruvate carboxylaseC.GlucokinaseD.Phosphofructokinase

In cases of brief caloric restriction (i.e,, <24 hours of fasting), which of the following physiological responses would result? a. Inhibition of hepatic glycogenolysis b. Decreased gluconeogensis in the skeletal muscle c. Decreased pancreatic secretion of glucagon into the blood d. Increased activity of gluconeogenesis in the liver e. Increased skeletal muscle glycogenolysis.  f. Increased glycogen synthase activity in the liver

Which enzyme is primarily responsible for initiating glycogenolysis?Question 13Answera.Glycogen synthaseb.Glycogen phosphorylasec.Hexokinased.Glucokinase

Which of the following enzymes are most likely to be regulated in glycolysis?Group of answer choicesA) all enzymes in glycolysis are potential regulation pointsB) enzymes that catalyze reversible steps are most likely to be regulatedC) hexokinase and pyruvate kinaseD) the first three enzymes of the pathway, since regulation is most efficient if it occurs at the beginning of a pathwayE) enzymes like aldolase, which catalyze big chemical changes like cleavage of C—C bonds

Which of the following occurs as a result of fasting?Group of answer choicesketone bodies are exported from the liver for use in extrahepatic tissueketone bodies are used in the liver as fuelGNG stops to allow the liver cell to produce ketonesGlycolysis in the liver cell happens to a greater degree

Which of the following changes in enzyme activity is likely to happen by the release of insulin from the pancreas?Group of answer choicesdecrease in glycogen phosphorylase activityincrease in phosphofructokinase 1 activitydecrease in PEP (phosphoenolpyruvate) carboxykinase activityincrease in acetyl-CoA carboxylase activitytwo or more of the above