Why are most types of fiber indigestible in the human GI tract?
A) Beta bonds present in fiber are difficult for the body to break down.
B) The molecular structure of fiber is too highly coiled to be broken down.
C) Fiber is too viscous to be digested by bacteria in the colon.
D) Alpha bonds present in fiber are difficult for the body to break down.
A
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Which is correct about why a person's metabolic rate naturally declines with age?
A. because of the natural gain of muscle mass B. because of the tendency for less daily physical activity C. because bone mass remains the same D. because older people eat less food
What does the term angiogenesis refer to?
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Insulin is synthesized and released by the
A. brain. B. liver. C. pancreas. D. gallbladder.