Explain how free radicals are formed. Discuss whether they are harmful.
What will be an ideal response?
Oxygen is used during metabolism to change carbohydrates and fats into energy. During this process oxygen is transformed into stable forms of water and carbon dioxide. A small amount of oxygen, however, ends up in an unstable form, referred to as oxygen free radicals.Free radicals attack and damage proteins and lipids, in particular cell membranes and DNA. This damage is thought to contribute to the development of conditions such as cardiovascular disease, cancer, emphysema, cataracts, Parkinson's disease, and premature aging. Environmental factors that seem to encourage the formation of free radicals include solar radiation, cigarette smoke, air pollution, radiation, some drugs, injury or infection, and chemicals (such as pesticides), among others.
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Determine your calorie requirements using MyPyramid.gov: www.mypyramid.gov. Do agree with your estimated calorie needs? Why or why not? Are you eating the amounts recommended in your MyPyramid plan from each food group daily? What changes can you make in your current dietary habits to better satisfy the results of your MyPyramid plan?
What will be an ideal response?
Match the combining form pod(o) with its closest definition.
A. Foot B. Pelvis C. Toe D. Spine
Illegal steroid use has no effect on the risk of contracting HIV.
Answer the following statement true (T) or false (F)
The suffix in the medical term seborrhea is ________ and its meaning is ________.
A. orrhea; flow B. rrhea; sebum C. seb; sebum D. rrhea; flow E. sebo; oil