Lipids are considered as macro-molecules because these are made up of glycerol combined with molecules of fatty acids.

Are lipids considered macromolecules?

Lipids are not true macromolecules because the monomers are not covalently bonded together. Simple lipids are composed of subunits made of fatty acids covalently bonded to a triose sugar – glycerol.

Why are lipids the best macromolecule?

Fats also provide an efficient way to store energy over long time periods, since they contain over twice as much energy per gram as carbohydrates, and they additionally provide insulation for the body.