Multiple Choice
Which of the following outlines the overall pathway of glycerol metabolism?
24. Lipid Metabolism
Glycerol Metabolism
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Which of the following represents the complete chemical reaction for the two stages of glycerol metabolism?
A
Glycerol + NAD+ + ADP → Glycerol-3-phosphate + NADH + ATP
B
Glycerol + NAD+ + ATP → DHAP + NADH + H+ + ADP
C
Glycerol-3-phosphate + NADH + H+ → Glycerol + ADP + Pi
D
Fatty acid + NaOH + H2O → Glycerol + NADH + H2
Verified step by step guidance1
Understand the context of glycerol metabolism, which involves the conversion of glycerol into dihydroxyacetone phosphate (DHAP) through a series of biochemical reactions.
Identify the first stage of glycerol metabolism: Glycerol is phosphorylated by ATP to form glycerol-3-phosphate, with the conversion of NAD+ to NADH.
Recognize the second stage: Glycerol-3-phosphate is oxidized to dihydroxyacetone phosphate (DHAP), with the reduction of NAD+ to NADH and the release of a proton (H+).
Note that the complete reaction involves the consumption of ATP and NAD+ in the first stage and the production of ADP, NADH, and H+ in the second stage.
Ensure the chemical equations are balanced in terms of atoms and charge, reflecting the conservation of mass and energy in the metabolic pathway.
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