Nitric oxide is a common type of "free radical" found in human cells. Free radicals are defined as

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    an atom that has more than 8 electrons in its valence shell.
    a molecule that contains an atom that has a full valence shell.
    a molecule that contains an atom that has an unpaired electron.
    an unreactive atom.
asked May 30, 2013 in Biology by anonymous
    

1 Answer

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a molecule that contains an atom that has an unpaired electron.
answered May 31, 2013 by Bioshare ~Top Expert~ (34,070 points)

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