What is the difference between coenzymes and cofactors, and where do we get them from?
Cofactors are inorganic substances, or minerals, such as zinc, potassium, iron, and magnesium. Some enzymes require that cofactors be attached to their active sites in order to function. Coenzymes are organic molecules derived from vitamins such as niacin and riboflavin. Unlike cofactors, coenzymes are not actually a part of the enzyme structure. Rather, they assist enzymes by accepting and donating hydrogen ions (H+), electrons (e-), and other molecules during chemical reactions. The vitamins in our diet provide coenzymes and the minerals provide cofactors.
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Based on the American Psychological Association estimates, how many women in the U.S. battle some form of eating disorder?
a. 1 million b. 2 million c. 4 million d. 8 million
High levels of homocysteine are associated with an increased risk for:
a. heart disease. b. type 2 diabetes. c. kidney disease. d. cancer.
Which of the following amino acids is considered an essential amino acid?
A. Valine B. Tyrosine C. Serine D. Alanine
If taken correctly, the effect of ART is to:
a. reduce malnutrition and opportunistic infections. b. effectively cure HIV/AIDS. c. prevent the spread of HIV/AIDS to uninfected sexual partners. d. improve the patient's sense of well-being.