All of the following polysaccharides are indigestible except
A. inulin.
B. pectin.
C. amylopectin.
D. cellulose.
Answer: C
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Which of the following best describes the effect of aging on the immune system?
a. Immunity is improved by abundant intake of iron-rich red meats and calcium-rich butter. b. In the United States, infectious diseases rarely cause of deaths in the elderly. c. Immune function does not decline with age in people who maintain good nutrition. d. Antibiotics are often ineffective in treating infections in older people who have deficient immune systems. e. In elderly persons, nutritional status rarely influences immune functioning.
Which of the following has been shown to improve absorption of iron from iron supplements?
a. Taking then with milk b. Taking them with orange juice c. Taking them on an empty stomach rather than with meals d. Taking them in the form of the ferric salt rather than the ferrous salt
During the first few days of a fast, what energy source provides about 90 percent of the glucose needed to fuel the body??
A) ?protein B) ?ketones C) ?glycogen D) ?triglycerides
The building blocks of proteins are
A) amino acids. B) fatty acids. C) glucose units. D) nitrogen.