Dictionary > Micromolecule

Micromolecule

Definition
noun, plural: micromolecules
A molecule that is relatively smaller (than a macromolecule), or of low molecular weight that may regulate a biological process
Supplement
In biology, a micromolecule refers to a molecule of relatively small size and low molecular weight as opposed to a macromolecule, which is large and with greater molecular weight. While a macromolecule may be viewed as a biological polymer, which by definition is a substance made up of small monomeric units bonded together. In this sense, a micromolecule can be viewed as the monomer that comprises a polymer macromolecule. The four major biological molecules are nucleic acids, proteins, carbohydrates, and lipids. In this regard, a protein as a macromolecule is comprised of micromolecule monomers, amino acids linked together by peptide bonds.
Monomers are considered a micromolecule that can be linked together to form polymer (which is a macromolecule). Apart from the monomers (e.g. nucleotides, amino acids, monosaccharides, glycerol and fatty acids) that make up the four main biomolecules, inorganic compounds like water and minerals are also examples of micromolecules.
Word origin: micro– (“small”) + molecule
Compare:

See also:

  • biomolecule
  • monomer
  • Related form(s):

    • micromolecular (adjective, of, pertaining to, relating to, or characterizing a micromolecule)


    You will also like...

    Non-Mendelian Inheritance
    Non-Mendelian Inheritance

    In this tutorial, find out more about certain types of inheritance that does not follow the Mendelian inheritance patter..

    An artistic depiction of Dunkleosteus fish
    Fish

    The sea was teeming with life. Eventually, through reproduction and continued variation, fish came about. There are over..

    "Cronopio dentiacutus", a prehistoric mammal (an illustration)
    Mammalian Ancestors

    Mammals are a diverse group of organisms, where most of them develop their offspring within the uterus of the mother. Ov..

    Oligodendrocyte and Schwann cell
    The Central Nervous System

    Myelin sheath is essential for a faster conductivity of signals. Know more about this feature of some neurons in the Cen..

    Biological Energy
    ATP & ADP – Biological Energy

    ATP is the energy source that is typically used by an organism in its daily activities. The name is based on its structu..

    Adaptation Tutorial
    Adaptation Tutorial

    Adaptation, in biology and ecology, refers to the process or trait through which organisms or the populations in a habit..