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Some theories of aging suggest that free radicals cause
Chapter 9, Problem 103E(choose chapter or problem)
Some theories of aging suggest that free radicals cause certain diseases and perhaps aging in general. As you know from the Lewis model, such molecules are not chemically stable and will quickly react with other molecules. According to certain theories, 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 cells and destroys them, weakening the body. Draw Lewis structures for each free radical implicated in this theory of aging.
a. O2-
b. O-
c. OH
d. CH3OO (unpaired electron on terminal oxygen)
Questions & Answers
QUESTION:
Some theories of aging suggest that free radicals cause certain diseases and perhaps aging in general. As you know from the Lewis model, such molecules are not chemically stable and will quickly react with other molecules. According to certain theories, 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 cells and destroys them, weakening the body. Draw Lewis structures for each free radical implicated in this theory of aging.
a. O2-
b. O-
c. OH
d. CH3OO (unpaired electron on terminal oxygen)
ANSWER:Solution 103 E Step 1 of 5 Radicals are chemical species in which there’s an atom with an unpaired electron. Since an atom doesn’t have the octet, this chemical species are very reactive