A stainless steel countertop. A countertop (also counter top, counter, benchtop, (British English) worktop, or (Australian English) kitchen bench) is a horizontal work surface in kitchens or other food preparation areas, bathrooms or lavatories, and workrooms in general. It is frequently installed upon and supported by cabinets.
Proteins, polysaccharides and nucleic acids are polymeric organic molecules built out of a very large number of repeating sub-units. The nucleic acids, double-helical DNA and single-stranded RNA are built
Monomers are the basic molecular form in which polymers and plastics are produced. Polymers consist of repeating molecular units, which usually are joined by covalent bonds. For a molecule to be a monomer, it must be at least bifunctional insofar as it has the capacity to interlink with other monomer molecules.