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Encyclopediamacromoleculemacromolecule, term that may refer either to a crystal such as a diamond, in which the atoms are identical and held by covalent bonds (see chemical bond) of equal strength, or to one of the units that compose a polymer. Macromolecules such as proteins and nucleic acids are vital to the functions of living cells. The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2007, Columbia University Press. All rights reserved. More on macromolecule from Infoplease:
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