Glycolipids are glycoconjugates of lipids found primarily on the extracellular face of eukaryotic cell membranes, playing essential roles in cellular structure and function. They include types such as cerebrosides, gangliosides, and sulfoglycosphingolipids, with functions ranging from acting as insulators for nerves to determining blood types and serving as receptors. The metabolism and degradation of glycolipids are facilitated by lysosomal enzymes, and they also play a role in immune response against pathogens.