How does a phospholipid differ from triacylglycerol?

Answer 1

The tri consisits of 3 fatty acid bound to a glycerol with an ester (covalent) linkage to a single saturated fat where as a phos-lip is the same apart from 1 fatty acid being replaced by a phophate group

Maybe if u think aboit it u can work tri cannot form a lipid bilayer where as the phospholipids can it must be the phos group must be hydrophilic in the bilayer making the polar heads so with out it the tri cannot form the bilayer consisting of polar heads facing the water and the non polar hydrophilic tails facing the inside