122 results found

Search Results for: atom

Atom

Definition noun, plural:atoms (physics, chemistry) (1) The smallest unit of matter indivisible by chemical means. (2) The... Read More

Oxidation

Oxidation Definition How do we define oxidation? There are several definitions of the oxidation process. Oxidation can be... Read More

Hydrogen bond

Definition noun plural: hydrogen bonds A type of chemical bond that is formed when the slightly positive hydrogen atom of... Read More

Chemical Composition of the Body

In order to fully understand the mechanisms of human physiology, it is important to have an understanding of the chemical... Read More

Covalent bond

Covalent Bond Definition What is a covalent bond? In chemistry and other fundamental science fields, a covalent bond is... Read More

Recoil atom

recoil atom The remainder of an atom from which a nuclear particle has been emitted or ejected at high velocity; the... Read More

Radioactive atom

Radioactive atom (Science: chemistry, physics) An atom with an unstable nucleus, which emits particulate or electromagnetic... Read More

Unified atomic mass unit

Definition noun, plural: unified atomic mass units One twelfth the mass of a neutral atom of the most abundant isotope of... Read More

Ionic bond

Definition noun plural: ionic bonds A type of chemical bond in which atoms, ions, or molecules are held together by... Read More

Atomic mass

Atomic mass (Science: chemistry, physics) The mass of an atom relative to other atoms. The present-day basis of the scale of... Read More

Atomic weight

Atomic weight (Science: chemistry) The average weight of an atom of an element, i.e. The total mass of protons and neutrons... Read More

Compound

Definition noun plural: compounds com·pound, ˈkɒmpaʊnd (general) A material made up of two or more parts or... Read More

Inorganic compound

Definition noun plural: inorganic compounds A chemical compound lacking both carbon-carbon (C-C) and carbon-hydrogen... Read More

Redox reaction

Redox Reaction Definition What are redox reactions? This is a common term in chemistry and biology. In chemistry, a redox... Read More

Carbon dioxide

Carbon Dioxide Definition noun, car·bon di·ox·ide, /daɪˈɒksaɪd/ (biochemistry) An inorganic compound, with the... Read More

Phosphodiester bond

Phosphodiester Bond Definition Phosphodiester bonds are the backbone of the strands of nucleic acid present in the life... Read More

Pyruvate

Pyruvate Definition Pyruvates have been often recognized as one of the most important molecules that are frequently... Read More

Atomy

Atomy An atom; a mite; a pigmy. a skeleton. Origin: For anatomy, taken as an... Read More

Valence electron

Definition noun, plural: valence electrons Any of the electrons on the outermost shell of an atom and takes part in chemical... Read More

Monomer

Monomer Definition What is a monomer? Monomers can be defined as building blocks of a polymer, which is a structure... Read More

Organization

Organization Definition The meaning of the term "organization" is very simple. It means the state wherein things are... Read More

Hydrogen

Hydrogen is one of the chemical elements found in nature. A chemical element refers to the pure substance of one type of... Read More

Polypeptide

Polypeptide Definition Biology What are polypeptides? A polypeptide is defined as a polymer of amino acids joined together... Read More

Chemical bond

Definition noun, plural: chemical bonds The attractive force that binds atoms, ions, or molecules in a chemical... Read More

Monad

monad 1. An ultimate atom, or simple, unextended point; something ultimate and indivisible. 2. (Science: philosophy) The... Read More

Element

Element Definition noun plural: elements el‧e‧ment, ˈel.ɪ.mənt (biochemistry) A substance that cannot be... Read More

Organic compound

Definition noun plural: organic compounds A compound that, in general, contains carbon covalently bound to other atoms,... Read More

Biomolecule

A molecule is an electrically neutral, group of atoms that can exist alone in a free state while its characteristic... Read More

Saccharide

Saccharide Definition What is a saccharide molecule? A saccharide is the unit structure of carbohydrates. In biochemistry,... Read More

Alcohol

Definition noun, plural: alcohols (chemistry) An organic compound containing one or more hydroxyl groups bound to a... Read More

Ion

Ion (Science: chemistry, radiobiology) atomic particle, atom or chemical radical bearing an electric charge, either negative... Read More

Organic molecule

Definition noun 1. A molecule that is normally found in or produced by living systems. 2. A molecule that typically... Read More

Ligand

Definition noun, plural: ligands (1) A molecule, ion or atom bonded to the central metal atom of a coordination... Read More

Deoxyribose

Definition noun (1) An aldopentose (i.e. a monosaccharide with five carbon atoms) derived from the pentose sugar ribose by... Read More

Reducing sugar

Reducing Sugar Definition What is reducing sugar? The type of sugar that acts as the reducing agent and can effectively... Read More

Vortex

vortex Origin: L. Vortex, vertex, -icis, fr. Vortere, vertere, to turn. See Vertex. 1. A mass of fluid, especially of a... Read More

Glycosylation

Definition noun A biochemical process where a glycan attaches to a protein, a lipid, or other organic molecule, especially... Read More

Anaerobic respiration

Anaerobic Respiration Definition What is anaerobic respiration? Anaerobic (cellular) respiration is a respiratory process... Read More

Hydrocarbon chain

Definition noun, plural: hydrocarbon chains A chain consisting of only carbon and hydrogen atoms Supplement A hydrocarbon... Read More

Water

Water Definition (1) (biochemistry) A chemical substance, with chemical formula H2O, that is a clear, colorless, odorless,... Read More