Which of the following statements is true?
A. Diets high in fiber increase the risk of type 2 diabetes.
B. Each gram of fiber supplies about 6 kcal for humans.
C. The human digestive tract does not produce enzymes that digest dietary fiber.
D. Eating foods rich in insoluble fiber may increase one's risk for heart disease.
Answer: C
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A common drug for the treatment of tuberculosis is known to markedly interfere in the metabolism of vitamin
a. B6 b. B12. c. C. d. D.
The shape of all proteins ranging from small, simple proteins to large, complex proteins is determined by
A. charge interactions. B. moving outside the cell. C. their amino acid sequences. D. the addition of prosthetic groups.
The recommendations for dietary intake of fat include
A. consuming little to no milk because milk contains saturated fat. B. plentiful consumption of oils such as coconut, palm, and palm kernel oils. C. keeping trans fatty acid consumption as low as possible. D. limiting mono- and polyunsaturated fats to less than 10 percent of daily calories.
Which of the following is a property of the fat-soluble vitamins?
a. Most of them are synthesized by intestinal bacteria b. Intestinal transport occurs by way of the portal circulation c. Deficiency symptoms may take years to develop on a poor diet d. Toxicity risk is higher for vitamins E and K than for other fat-soluble vitamins e. Deficiencies are more common in industrialized nations than in developing nations.