What distinguishes sphingoglycolipids from other sphingolipids?

• A. They contain a glycerol backbone instead of a sphingosine backbone.
• B. They contain a carbohydrate group attached to the sphingolipid base.
• C. They are not found in cellular membranes.
• D. They contain a phosphate group attached to the sphingolipid base.

Answer: (B)