The reason that dietary fibers cannot be efficiently utilized as an energy source by humans is:

a. they are made up of completely different monosaccharides that cannot be metabolized
b. The beta bond that links the glucoses cannot be cleaved by human enzymes
c. They are only partially carbon based
d. The energy in the fiber bonds is less than the energy in the bonds of starch and individual glucose


Answer: b. The beta bond that links the glucoses cannot be cleaved by human enzymes

Nutritional Science

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If a physician places a feeding tube through the skin and into the stomach without a surgical incision and using an endoscope, it is most specifically referred to as:

a. gastrostomy. b. nasogastric. c. orogastric. d. PEG.

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To maintain energy balance, it is estimated that a sedentary individual requires approximately _____ kcal/kg of body weight daily

a. 20 b. 25 c. 30 d. 35

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People who are vegetarians also tend to:

A) exercise regularly. B) smoke less. C) avoid alcohol. D) All of the above

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How is blood routed through the digestive system?

a. Heart to arteries to capillaries (intestines) to hepatic portal vein to capillaries (liver) to hepatic vein to heart b. Heart to capillaries to arteries (intestines) to hepatic portal vein to arteries (liver) to hepatic vein to heart c. Heart to arteries to capillaries (liver) to hepatic portal vein to capillaries (intestines) to hepatic portal vein to heart d. Heart to capillaries to arteries (gallbladder) to hepatic portal vein to arteries (liver) to hepatic vein to heart e. Heart to arteries to capillaries (intestines) to hepatic vein to capillaries (pancreas) to hepatic portal vein to heart

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