News tagged with chemical reactions

Related topics: catalyst , molecules , enzyme , atoms , fuel cell

Putting the brakes on inflammation

A team led by a University of Arizona researcher has discovered a previously unknown mechanism that prevents the immune system from going into overdrive, shedding light not only on how our body controls its ...

Jul 23, 2013
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The biology of fats in the body

When you have your cholesterol checked, the doctor typically gives you levels of three fats found in the blood: LDL, HDL and triglycerides. But did you know your body contains thousands of other types of fats, or lipids?

Apr 29, 2013
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Judges side with FDA in rejecting stem cell device

(AP)—A federal appeals court is siding with the Food and Drug Administration in a case brought by medical device maker Cytori, ruling that the agency was correct to reject fast-track approval for two company devices used ...

Mar 22, 2013
popularity 3.7 / 5 (3) | comments 1

Chemical reaction

A chemical reaction is a process that always results in the interconversion of chemical substances. The substance or substances initially involved in a chemical reaction are called reactants. Chemical reactions are usually characterized by a chemical change, and they yield one or more products, which usually have properties different from the reactants. Classically, chemical reactions encompass changes that strictly involve the motion of electrons in the forming and breaking of chemical bonds, although the general concept of a chemical reaction, in particular the notion of a chemical equation, is applicable to transformations of elementary particles, as well as nuclear reactions. Different chemical reactions are used in combination in chemical synthesis in order to get a desired product. In biochemistry, series of chemical reactions catalyzed by enzymes form metabolic pathways, by which syntheses and decompositions ordinarily impossible in conditions within a cell are performed.

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