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  2. Chemical compound - Wikipedia

    en.wikipedia.org/wiki/Chemical_compound

    A chemical compound is a chemical substance composed of many identical molecules (or molecular entities) containing atoms from more than one chemical element held together by chemical bonds. A molecule consisting of atoms of only one element is therefore not a compound. A compound can be transformed into a different substance by a chemical ...

  3. Chemical biology - Wikipedia

    en.wikipedia.org/wiki/Chemical_biology

    Chemical biology is a scientific discipline between the fields of chemistry and biology. The discipline involves the application of chemical techniques, analysis, and often small molecules produced through synthetic chemistry, to the study and manipulation of biological systems. [1] Although often confused with biochemistry, which studies the ...

  4. Chemical ecology - Wikipedia

    en.wikipedia.org/wiki/Chemical_ecology

    Chemical ecology is a vast and interdisciplinary field utilizing biochemistry, biology, ecology, and organic chemistry for explaining observed interactions of living things and their environment through chemical compounds (e.g. ecosystem resilience and biodiversity). [1][2] Early examples of the field trace back to experiments with the same ...

  5. Chemotaxonomy - Wikipedia

    en.wikipedia.org/wiki/Chemotaxonomy

    Digestive enzymes are chemical compounds that help in digestion. Proteins are always digested by a particular type of enzymes like pepsin, trypsin, etc., in all animals from a single celled amoeba to a human being. The complexity in the composition of these enzymes increases from lower to higher organisms but are fundamentally the same.

  6. Water - Wikipedia

    en.wikipedia.org/wiki/Water

    Water (data page) – Chemical data page for water is a collection of the chemical and physical properties of water. Aquaphobia – Persistent and abnormal fear of water; Blue roof – Roof of a building that is designed to provide temporary water storage; Catchwater – Runoff catching or channeling device; Human right to water and sanitation

  7. Cosmochemistry - Wikipedia

    en.wikipedia.org/wiki/Cosmochemistry

    Cosmochemistry (from Ancient Greek κόσμος (kósmos) 'universe' and χημεία (khēmeía) 'chemistry') or chemical cosmology is the study of the chemical composition of matter in the universe and the processes that led to those compositions. [1] This is done primarily through the study of the chemical composition of meteorites and other ...

  8. Melatonin - Wikipedia

    en.wikipedia.org/wiki/Melatonin

    Melatonin, an indoleamine, is a natural compound produced by various organisms, including bacteria and eukaryotes. [1] Its discovery in 1958 by Aaron B. Lerner and colleagues stemmed from the isolation of a substance from the pineal gland of cows that could induce skin lightening in common frogs.

  9. PubChem - Wikipedia

    en.wikipedia.org/wiki/PubChem

    PubChem is a database of chemical molecules and their activities against biological assays. The system is maintained by the National Center for Biotechnology Information (NCBI), a component of the National Library of Medicine, which is part of the United States National Institutes of Health (NIH). PubChem can be accessed for free through a web ...

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