Radial: A word with diverse meanings in medicine and the biomedical sciences: 1  Pertaining to the radius, the smaller bone in the forearm. 2  The radial artery is so named because of its proximity to the radius. 3  Pertaining to the radius of a circle.
A 3D model of ethyne (acetylene), the simplest alkyne. In organic chemistry, an alkyne is an unsaturated hydrocarbon containing at least one carbonâcarbon triple bond. The simplest acyclic alkynes with only one triple bond and no other functional groups form a homologous series with the general chemical formula CnH2nâ2.
Carbohydrates are usually composed solely of carbon, hydrogen, and oxygen, although some also contain nitrogen, sulfur, or phosphorus. Glucose, a common monosaccharide. Carbohydrates are classified according to size. The smallest carbohydrates are called monosaccharides (mono means one; saccharide means sugar).As the name implies, these are single sugar molecules. The most common monosaccharides, such as fructose and glucose, have six carbon atoms, but monosaccharides can have as few as three or as many as seven.ligosaccharides (oligo means few) are more complex carbohydrates composed of chains of two or a few (up to about twenty) simple sugars joined with a type of covalent bond called a glycosidic bond. The longer oligosaccharides may be linear or branched.