Which of the following is true about free radicals?
A. They are protected by vitamin E, vitamin C, and beta-carotene.
B. They can damage cells.
C. They contribute to the colorful pigments found in fruits and vegetables.
D. They are abundant in fruits, vegetables, and whole grains.
Ans: B. They can damage cells.
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A condition characterized by dangerously high potassium levels in the blood is
A) hyponatremia. B) hyperkalemia. C) hypokalemia. D) hypernatremia.
Which of the following is a function of insulin-like growth factor-1 (IGF-1)?
A. It promotes lipid deposition in the mother. B. It promotes uptake of nutrients by the fetus and inhibits fetal tissue breakdown. C. It stimulates the growth of the endometrium during pregnancy. D. It promotes uterine and breast duct development in pregnant women. E. It increases maternal insulin resistance to maintain glucose availability for fetal use.
A(n) _____ is a substance that speeds up a chemical reaction but is not consumed or altered in the process
a. hormone b. amino acid c. protein d. catalyst
Which of the following is a characteristic of vitamin C and vitamin E?
a. Both protect against LDL oxidation b. Neither reduces arterial inflammation c. Neither participates in regulating blood clotting d. Both act as prooxidants at physiological intakes