1. | only an unsaturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached. |
2. | a saturated or unsaturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached. |
3. | a saturated or unsaturated fatty acid esterified to a phosphate group which is also attached to a glycerol molecule. |
4. | only a saturated fatty acid is esterified to a glycerol molecule to which a phosphate group is also attached. |