These macromolecules are polar [polar: having different ends] because they are formed by head to tail condensation of polar monomers. Let's look at the three major classes of macromolecules to see how this works, and let's begin with carbohydrates.
Bostwick Steel Lath Company advertisement for steel truss loop type metal lath in 1920. A lath or slat is a thin, narrow strip of straight-grained wood used under roof shingles or tiles, on lath and plaster walls and ceilings to hold plaster, and in lattice and trellis work.
Noun. 1. broth-liquid in which meat and vegetables are simmered; used as a basis for e.g. soups or sauces; she made gravy with a base of beef stock. stock. soup-liquid food especially of meat or fish or vegetable stock often containing pieces of solid food.. broth-a thin soup of meat or fish or vegetable stock. soup-liquid food especially of meat or fish or vegetable stock often containing pieces of solid food. barley water-used to feed infants.