How are free radicals formed? Discuss whether or not they are harmful
Oxygen is utilized 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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Monophasic oral contraceptive drugs have a ________
A) fixed dose of a progestins drug and a varying dose of an estrogen drug B) fixed dose of both a progestins drug and an estrogen drug C) varying dose of a progestins drug and a fixed dose of an estrogen D) varying dose of both a progestins drug and an estrogen drug
While providing medications to clients in the long-term care facility, which of the following actions would the nurse use to prevent gastrointestinal side effects? (Select all that apply.)
A. Give clients yogurt to prevent diarrhea. B. Increase client intake of fiber to reduce gastric motility. C. Provide milk or food with some medications to reduce the occurrence of nausea. D. Improve absorption of the medication by giving it at night with a large snack. E. Prevent constipation by providing fiber laxatives.
What is the main function of carbohydrates?
A. To regulate body processes B. To maintain body temperature C. To build and repair cells D. To provide fuel for the body cells
Criterion-related validity can be obtained by correlating scores on golf skills test with actual scores from playing golf
Indicate whether the statement is true or false