Which of the following statements is true?
A. Dietary fiber includes the stringy material found in tough, overcooked meat.
B. Scientists classify a form of fiber according to whether it dissolves or swells in oil.
C. The human digestive tract makes enzymes that digest fiber into glucose molecules.
D. Most Americans do not consume enough dietary fiber.
Answer: D
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Which of the following statements describes the thermic effect of foods (TEF)?
a. TEF is estimated at 25% of energy intake. b. TEF plus an increase in the metabolic rate due to overeating is called diet-induced thermogenesis (DIT). c. A meal eaten all at once has a lower TEF than one spread out over hours. d. TEF is higher for high-fat foods than for high-carbohydrate foods. e. TEF must be considered when estimating energy expenditure because its contribution to total energy output is substantial.
What percentage of the RDA for iron is consumed by the typical woman?
a. 33 b. 67 c. 100 d. 130
Which one of the following statement describes a correct function of nutrients?
a) Carbohydrates are involved in oxygen transport b) Proteins are used to harden bone. c) Lipids can be used as regulatory molecules. d) Vitamins form and maintain body structure.
A patient complains of nausea and muscle tremors, which mineral do you suspect is deficient?
a. magnesium b. potassium c. sodium d. copper