Which of the following statements is TRUE regarding free radicals?
A)Free radicals are formed as a by-product of healthy metabolism.
B)Our body has no mechanism to combat free radicals.
C)Exposure to pollution decreases free radical production.
D)A free radical is an atom with paired electrons in its outermost shell.

Question

Quizplus · Accepted Answer

Free radicals are formed as a by-product of the normal cellular metabolism. They are highly reactive molecules that can damage cells and have been associated with a variety of diseases, including cancer and heart disease. Our body does have mechanisms to combat free radicals, such as antioxidants, but excessive free radical production can overwhelm these mechanisms. Exposure to pollution, on the other hand, can actually increase free radical production. A free radical is an atom or molecule with an unpaired electron in its outermost shell.

Which of the Following Statements Is TRUE Regarding Free Radicals