Why does eating a high-fiber diet lower a person's risk for heart disease?
a. Food travels faster through the digestive tract, allowing less time for cholesterol absorption to occur.
b. A high-fiber diet is typically high in dietary cholesterol.
c. This diet is a rich source of antioxidants, which can neutralize damaging free radicals.
d. a and c only
e. b and c only
d
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What percentage of vitamin D from the diet is absorbed??
A) ?20% B) ?30% C) ?40% D) ?50%
The enzyme that breaks down protein is:
a. amylase. b. pepsin. c. lipase. d. bile.
Prader-Willi syndrome is best described as an error in:
a. genotype. b. genomic imprinting. c. metabolism. d. the number of nucleotides.
Which of the following hormones that is secreted from the adrenal medulla regulates arterial blood pressure and prepares the body for "fight or flight" responses?
A. oxytocin B. serotonin C. cortisol D. epinephrine E. norepinephrine