“Polypropylene is a linear macromolecule, or polymer, composed of repeating units of isopropane.”

“Now assume that a macromolecule contains reversible linker groups allowing weak links with the gel.”

“Perhaps the most primitive structure unit was cablelike and reflected the filamented keratin macromolecule.”

“Electron crystallography has been widely applied to determine the structures of biological macromolecules.”

“Saccharides combine to form complex macromolecules in a polymerization reaction called dehydration synthesis.”

“High-resolution NMR techniques are now routinely employed to study the structure of complex macromolecules in solution.”