A large (macro) molecule often created by polymerization of smaller subunits (monomers).  In biology, the three main groups are nucleic acids (i.e. DNA and RNA), proteins, and polysaccharides.  In these three examples the polymerized monomers would be nucleotides, amino acids, and monosaccharides respectively.  Macromolecules can also be non-polymeric (e.g. lipids and macrocycles)….


A macrocycle is, as defined by IUPAC, “a cyclic macromolecule or a macromolecular cyclic portion of a molecule.” [1] Typically this is a ring of nine or more atoms with three or more potential donor atoms that can coordinate to a metal center. Well known examples in biology are heme, chlorophyll, and vitamin B12. 1. “Glossary of basic terms in polymer science (IUPAC Recommendations 1996)”. Pure and Applied Chemistry 68 (1…

List of Biology Words Starting with M

m/z macro- macroarray macrocycle macromere macromolecule macrophage macroscopic macula Magnesium (Mg) Magnetic Resonance Imaging (MRI) Magnetic resonance spectroscopy major histocompatibility complex (MHC) malaise Malignant malonate Mammogram mandible mantle manual titration Manx MAO-B inhibitor MAP kinases map unit MAPK mapping mapping function Marfan’s syndrome margin marginal zone marker marker retention…

metabolic labelling

The process in which bacterial cells are grown in the presence of radiolabelled precursors of macromolecule synthesis (DNA, protein, fatty acids and peptidoglycan). Blocks to radiolabel incorporation can identify a mutant defect or the cellular target of an antimicrobial compound….


Measure of molecular weight or mass. One hydrogen atom has mass of 1 Da, so 1 Da = 1 g/mol. Proteins and other macromolecule molecular weights are usually measured in kDa or kD (kilodaltons) – 1000 Da. Average amino acid = 110 Da….