Which of the following statements correctly describes the effect of insulin and glucagon on gluconeogenesis?
AGlucagon decreases fructose 2,6-bisphosphate levels, stimulating gluconeogenesis.
BInsulin increases the levels of fructose 2,6-bisphosphate, which inhibits gluconeogenesis.
CInsulin acts through a kinase to promote glycolysis.
DFructose 2,6-bisphosphate is an activator of glycolysis.
A patient had dinner at 8 PM at night and does his blood sugar test at 7 AM in the morning. What is the major source of glucose at this time?
ALiver Glycogen
BMuscle Glycogen
CGluconeogenesis
DDietary Carbohydrate
EKetone bodies
Which of the following statements best describes the mechanism of action of insulin on target cells?
AInsulin binds to a receptor on the outer surface of the plasma membrane, activating adenylate cyclase through the Gs protein.
BInsulin binds to a cytoplasmic receptor and is transferred as a hormone receptor complex to the nucleus to modulate gene expression.
CInsulin enters the cell and causes the release of calcium ions from intracellular stores.
DInsulin binds to a transmembrane receptor on the outer surface of the plasma membrane, activating the tyrosine kinase in the cytosolic domain of the receptor.
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