Multiple Choice
Which of the following outlines the overall pathway of glycerol metabolism?
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Table of contents
- 1. A Review of General Chemistry5h 6m
- Summary23m
- Intro to Organic Chemistry4m
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- Reactions of Amino Acids: Esterification7m
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- 31. Catalysis in Organic Reactions1h 30m
- 32. Lipids 2h 50m
- 33. The Organic Chemistry of Metabolic Pathways2h 52m
- Intro to Metabolism6m
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- Pyruvate Oxidation (Simplified)4m
- Anaerobic Respiration11m
- Catabolism of Fats: Glycerol Metabolism11m
- Intro to Citric Acid Cycle7m
- Structures of the Citric Acid Cycle19m
- The Citric Acid Cycle35m
- 34. Nucleic Acids1h 32m
- 35. Transition Metals6h 14m
- Electron Configuration of Elements45m
- Coordination Complexes20m
- Ligands24m
- Electron Counting10m
- The 18 and 16 Electron Rule13m
- Cross-Coupling General Reactions40m
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- Negishi Coupling Reaction16m
- Buchwald-Hartwig Amination Reaction19m
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- Catalytic Allylic Alkylation18m
- Alkene Metathesis23m
- 36. Synthetic Polymers1h 49m
- Introduction to Polymers6m
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- Radical Polymerization15m
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33. The Organic Chemistry of Metabolic Pathways
Catabolism of Fats: Glycerol Metabolism
Multiple Choice
The glycerol derived from lipolysis of a triglyceride molecule is converted into glycerol-3-phosphate followed by dihydroxyacetone phosphate. Which step does this dihydroxyacetone phosphate enter in terms of glycolysis?
A
Step 1
B
Step 3
C
Step 5
D
Step 10
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Verified step by step guidance1
Understand that dihydroxyacetone phosphate (DHAP) is an intermediate in glycolysis, which is the metabolic pathway that converts glucose into pyruvate.
Recall that DHAP is formed from glycerol-3-phosphate, which is derived from glycerol, a product of triglyceride breakdown.
Recognize that DHAP is isomerized to glyceraldehyde-3-phosphate (G3P) by the enzyme triose phosphate isomerase in glycolysis.
Identify that the conversion of DHAP to G3P occurs in Step 5 of glycolysis, where both DHAP and G3P are interconvertible.
Conclude that the correct step in glycolysis where dihydroxyacetone phosphate enters is Step 5, as it is converted to glyceraldehyde-3-phosphate, which continues through the glycolytic pathway.
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