Medical dictionary. 2011.
high energy bond — a chemical bond whose hydrolysis yields high levels of free energy; such bonds involve phosphate (high energy phosphate b.) or sulfur (high energy sulfur b.) or other mixed anhydride types of chemical structures … Medical dictionary
Sulfur — This article is about the chemical element. For other uses, see Sulfur (disambiguation). phosphorus ← sulfur → chlorine … Wikipedia
Sulfur assimilation — Sulfate reduction and assimilation in plants (APS, adenosine 5 phosphosulfate; Fdred, Fdox, reduced and oxidized ferredoxin; RSH, RSSR, reduced and oxidized glutathione)|right|325pxSulfur is an essential element for growth and physiological… … Wikipedia
Binding energy — Nuclear physics Radioactive decay Nuclear fission Nuclear fusion Classical decays … Wikipedia
Allotropes of sulfur — There are a large number of allotropes of sulfur. In this respect, sulfur is second only to carbon.[1] The most common form found in nature is yellow orthorhombic α sulfur, which contains puckered rings of S8.[1] Chemistry students may have seen… … Wikipedia
Disulfide bond — In chemistry, a disulfide bond (Br.E. disulphide bond) is a covalent bond, usually derived by the coupling of two thiol groups. The linkage is also called an SS bond or disulfide bridge. The overall connectivity is therefore R S S R. The… … Wikipedia
Lattice energy — Sodium chloride crystal lattice The lattice energy of an ionic solid is a measure of the strength of bonds in that ionic compound. It is usually defined as the enthalpy of formation of the ionic compound from gaseous ions and as such is… … Wikipedia
Outline of energy — See also: Index of energy articles In physics, energy (from the Greek ἐνέργεια – energeia, activity, operation , from ἐνεργός – energos, active, working [1]) is a scalar physical quantity that describes the amount of work that can be performed by … Wikipedia
chemistry — /kem euh stree/, n., pl. chemistries. 1. the science that deals with the composition and properties of substances and various elementary forms of matter. Cf. element (def. 2). 2. chemical properties, reactions, phenomena, etc.: the chemistry of… … Universalium
Life Sciences — ▪ 2009 Introduction Zoology In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… … Universalium
