Some fatty acid molecules actually play a crucial role ... question — why were the same set of starting molecules, unsaturated fatty acids, chosen as the starting point for signaling molecules ...

unsaturated fatty acids. The de novo, type II fatty acid biosynthetic pathway is a major focal point for the regulation of fatty acid composition. Phospholipids are used as intermediates in the ...

unsaturated, saturated, and trans fats. Their differences, which determine their effect on your health, are defined by each fat's chemical composition and the bonds between the fatty acid molecules.