Multiple Choice
Which of the following represents the complete chemical reaction for the two stages of glycerol metabolism?
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24. Lipid Metabolism
Glycerol Metabolism
Struggling with GOB Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple 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
Verified step by step guidance1
Understand that glycerol derived from triglycerides is first converted to glycerol-3-phosphate by the enzyme glycerol kinase.
Glycerol-3-phosphate is then oxidized to dihydroxyacetone phosphate (DHAP) by the enzyme glycerol-3-phosphate dehydrogenase.
Recognize that dihydroxyacetone phosphate is an intermediate in the glycolysis pathway.
Recall that in glycolysis, dihydroxyacetone phosphate is isomerized to glyceraldehyde-3-phosphate by the enzyme triose phosphate isomerase.
Identify that the conversion of dihydroxyacetone phosphate to glyceraldehyde-3-phosphate occurs at Step 5 of glycolysis, where both molecules are involved in the pathway.
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