Question: Glycerol, lactate, and amino acids contribute carbon precursors in the formation of glucose; howe…

Glycerol, lactate, and amino acids contribute carbon precursors
in the formation of glucose; however, the path that glycerol takes
is strikingly different from the other precursors. Which answer
below explains how it differs. a) Glycerol is decarboxylated to
acetyl CoA and enters gluconeogenesis as pyruvate b) Glycerol
enters gluconeogenesis as a breakdown product of triacylglycerols
in the form of dihydroxyacetone phosphate c) Glycerol undergoes a
reversible reduction/oxidation reaction to form phosphoenolpyruvate
d) Glycerol is first oxidized in a reaction requiring NAD+ and then
phosphorylated in reversible reaction of glycolysis e) Glycerol is
oxidized and enters gluconeogenesis as glyceraldehyde phosphate