Answer and explanation

Correct answer: A. Three fatty acids each form an ester bond with one glycerol

  1. Step 1: Glycerol has three hydroxyl groups. Step 2. Each reacts with a fatty acid in a condensation reaction, forming three ester bonds and releasing three water molecules. Answer: Three fatty acids each form an ester bond with one glycerol. Why not the others: that would need three glycerols; two fatty acids plus a phosphate describes a phospholipid; peptide bonds are not involved.

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A triglyceride is formed… | A-Level UK (AQA, Edexcel, OCR)