Macromolecule (Molecular Biology)

Macromolecules are molecules that are characterized by their very large size and high molecular weight. This diverse group of giant molecules can contain from several hundred to many thousands of atoms and have molecular weights ranging from ~1kDa to well over 1000 kDa. The term macromolecule is often used interchangeably with polymer, though not all macromolecules are formed by polymerization of simple molecules. Macromolecules may be naturally occurring or man-made. Examples of man-made or synthetic macromolecules include plastics, fibers, and paints. Naturally occurring macromolecules include wool, cotton, wood, silk, and rubber. Of particular interest to the molecular biologist are the biological macromolecules or biopolymers essential for life, such as proteins, nucleic acids, and carbohydrates.

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