Free radicals are Question 65 options: derived from immunological theory. the result of mitochondrial mutation. molecules with an unpaired electron. unnatural byproducts of oxidation.
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Free radicals are highly reactive molecules that have one or more unpaired electrons in their outer shell. Show more…
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Madhur L.
Some theories on aging suggest that free radicals cause a variety of diseases and aging. Free radicals (as explained in Problems 111 and 112 ) are molecules or ions containing an unpaired electron. As you know from the Lewis model, such molecules are not chemically stable and quickly react with other molecules. Free radicals may attack molecules within the cell, such as DNA, changing them and causing cancer or other diseases. Free radicals may also attack molecules on the surfaces of cells, making them appear foreign to the body's immune system. The immune system then attacks the cell and destroys it, weakening the body. Draw the Lewis structure for each of these free radicals, which have been implicated in theories of aging. (a) $\mathrm{O}_{2}^{-}$ (b) O (c) OH (d) $\mathrm{CH}_{3} \mathrm{OO}$ (unpaired electron on terminal oxygen)
Carcinogens are likely mutagens. However, mutagen may not be carcinogen. True False Reactive oxygen species in mitochondria are considered: Exogenous mutagens Carcinogens Risk factors Endogenous mutagens
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