Under which conditions will dietary protein not be used efficiently by the body, regardless of the quality? Why does this occur?


Dietary protein—no matter how high the quality—will not be used efficiently and will not support growth when energy from carbohydrate and fat is lacking. The body assigns top priority to meeting its energy need and, if necessary, will break down protein to meet this need. After stripping off and excreting the nitrogen from the amino acids, the body will use the remaining carbon skeletons in much the same way it uses those from glucose or fat. A major reason why people must have ample carbohydrate and fat in the diet is to prevent this wasting of protein. Carbohydrate and fat allow amino acids to be used to build body proteins. This is known as the protein-sparing effect of carbohydrate and fat.

Nutritional Science

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What will be an ideal response?

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In fermented dairy products some _____ is broken down to provide _____ for bacterial growth, and this makes the curd softer and more digestible.

A. lactose; lactase B. carbohydrate; hydrogen C. lipid; oxygen D. protein; nitrogen

Nutritional Science

Which of the following is a similarity between linoleic acid and linolenic acid?

A) Both have 20 carbon atoms. B) Both are essential fatty acids. C) Both are omega-6 fatty acids. D) Both have one double bond.

Nutritional Science

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a. True b. False Indicate whether the statement is true or false

Nutritional Science