This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Chemistry of Lipids, Subject name: Biochemistry
Alcohol is found in all except : 
Select and explain. 
A. Glucocerebroside, B. DHA (Docosa Hexaenoic Acid), C. Lecithin, D. Sphingomyelin
B: DHA (Docosa Hexaenoic Acid)
Answer: B: DHA (Docosa Hexaenoic Acid) 
Explanation: Alcoholic group is found in Glucocerebrosides, Sphingomyelin, Lecithin except for DHA. DHA (Docosa Hexaenoic Acid) 22C fatty acid with 6 double bonds. No alcohol is present Glucocerebrosides & Sphingomyelin contains Sphingosine alcohol. Lecithin contains Glycerol alcohol.