This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
A membrane phospholipid that does not contain glycerol is: 
Select and explain. 
A. Lecithine, B. Cardiolipin, C. Sphingomyelin, D. Cellulose
C: Sphingomyelin
Answer: C: Sphingomyelin 
Explanation: Sphingomyelin has got sphingosine alcohol, not the glycerol. Lecithin & cardiolipin has got glycerol in it and they are membrane phospholipid.