Question

which of the following is an amino alcohol?
select the correct answer below:
o choline
glycerol
o fatty acid
o sphingomyelin

Explanation:

• Choline has both an amino group (\(-\text{NH}_3^+\)) and a hydroxyl group (\(-\text{OH}\)), so it is an amino - alcohol.
• Glycerol (\(\text{HOCH}_2\text{CH(OH)CH}_2\text{OH}\)) has only hydroxyl groups, no amino groups.
• Fatty acids have a carboxyl group (\(-\text{COOH}\)) and a long - chain hydrocarbon, no amino and hydroxyl groups (in the sense of an amino - alcohol).
• Sphingomyelin is a phospholipid, which is composed of a sphingosine backbone, a phosphate group, and a choline (in some cases) or other head groups. But it is a more complex lipid structure, not just an amino - alcohol.

Answer:

choline