Triglycerides and phospholipids are two groups of lipid
Lipids are a group of biological molecules that includes fats and oils. Triglycerides and phospholipids are the two main types you need to know.
Real World
Avocados are rich in triglycerides (the healthy monounsaturated kind), while egg yolk lecithin — a phospholipid — is used commercially to emulsify mayonnaise because its hydrophilic head attracts water and its hydrophobic tails attract oil.
Exam Focus
Distinguish the two groups by their glycerol head: triglycerides have three fatty acid tails; phospholipids replace one tail with a phosphate group — state this explicitly.
Evaluation Scaffold
A four-step framework for high-quality evaluation. Use this for 'assess', 'evaluate', and 'to what extent' questions.
How well did you know this?