Final answer:
Ceramides with a carbohydrate head group, including glycolipids like glucocerebrosides and gangliosides, are synthesized in the Golgi apparatus, where the addition of carbohydrates to lipids takes place.
Step-by-step explanation:
Ceramides with a carbohydrate head group, such as glucocerebrosides and galactocerebrosides, are made in the Golgi apparatus. During their synthesis, enzymes in the Golgi apparatus modify lipids, often adding carbohydrate components to them, which results in the formation of glycolipids like glucocerebrosides (when the sugar is glucose) and galactocerebrosides (when the sugar is galactose).
Gangliosides, which are complex glycolipids with several sugar units such as glucose, galactose, and sialic acid, are also assembled in the Golgi apparatus through stepwise addition of activated sugars like UDP-glucose (UDPglc), UDP-galactose (UDPgal), and N-acetyl-neuraminic acid.