Multiple choice Which of the following lipids is a 18-carbon amino alcohol? Sphingosine Cerebrosides Ceramides Sphingomyelin Reveal answer Fill a bubble to check yourself A Correct answer Explanation Sphingosine is an 18-carbon amino alcohol with an unsaturated hydrocarbon chain, which forms a primary part of sphingolipids, a class of cell membrane lipids that include sphingomyelin, an important phospholipid.