Science Fair Project Encyclopedia
Quinone
Quinone is generally defined as an aromatic beneze molecule containing a double ketone functional group. Quinone is a common constituent of biologically relevant molecules (e.g. Vitamin K1 is phylloquinone) and serve as electron acceptors in electron transport chains such as those in Photosystem I & II, and aerobic respiration.
Benzoquinone refers to either of two cyclic isomers with the chemical formula C6H4O2: orthobenzoquinone and parabenzoquinone.
The word quinone can also be used for a family of molecules having a cycle with two double bonds similar to benzoquinone.
10-26-2009 08:16:03
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details




