試題詳解

39. Fructose in the diet or fructose from sucrose in the diet can be a source of calories for fat synthesis in the liver because:
(A) ketoses are fattening.
(B) fructose enters glycolysis after the primary regulation point, phosphofrutokinase-1 (PFK-1).
(C) fructose provides a net of four ATP from glycolysis.
(D) fructose enters the branch of glycolysis that forms fat.
(E) glycerol (the "backbone" of triacylglycerols) comes specifically from fructose.