Free radicals are dangerous because a. they are found incorporated in any radioisotope, including those than can enter the body through the lungs as does radon b. they can be taken into the body in the food eaten if that food has been grown in radioactive soil c. they are substances that are missing some electrons and are extremely active chemically d. all of these responses are correct e. no correct response

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Sulfur Functional Groups

Many organic molecules contain sulfur functional groups and have their own importance in chemistry as well as biology. Some of the organic molecules which contain sulfur functional groups and the corresponding sulfur functionality is given below: