A measurement of the quality of food protein based on the amount that is retained in the body after digestion, absorption, and excretion is
a. biologic value.
b. amino acid score.
c. protein efficiency ratio.
d. urinary urea excretion.
A
The measurement of food protein quality that is based on the amount retained in the body after digestion, absorption, and excretion is biologic value. Amino acid score measures the amino acid content of a food compared with a reference protein. Protein efficiency ratio measures the effects of different proteins on weight gain in rats. Urinary urea excretion measures the amount of ni-trogen excreted from the body; this includes nitrogen from breakdown of endogenous (body) proteins and exogenous (food) proteins.
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