Describe one similarity and one difference between the structure of a saturated and an unsaturated fat.

Similarity:

Difference:

Similarity:

both are (tri)esters / both made from glycerol/propane-1,2,3-triol/HOCH₂CH(OH)CH₂OH / both are triglycerides;

Difference:

unsaturated fats have C=C/carbon−carbon double bond / saturated fats have no C=C/carbon−carbon double bonds;

Many candidates are still forgetting to specify that the difference is in carbon-carbon double bonds. This is important as both fats contain carbon-oxygen double bonds.