Enterocyte A has 9.0 mmol of free fatty acids available and 3.0 mmol of glycerol-3-phosphate. Assuming all components are perfectly used and each triglyceride requires three fatty acids and one glycerol backbone, how many mmol of triglyceride can be reassembled?

• A. 1.5 mmol of triglyceride because only half the fatty acids become esterified when glycerol is limiting, due to steric hindrance inside enterocytes.
• B. 0.33 mmol of triglyceride since three glycerol molecules are required for each triglyceride in biological reassembly pathways.
• C. 9.0 mmol of triglyceride can be reassembled because each glycerol allows formation of three triglycerides under ideal enzyme kinetics.
• D. 3.0 mmol of triglyceride can be reassembled.

Answer: (D)