NTR 401 Exam #1 Questions and
Answers
Zymogen can be defined as... - Answer-Protein that can become an active enzyme
through proteolysis at a location outside the cells where it is synthesized
The absorptive cells lining the gastrointestinal tract are called... - Answer-Enterocytes
The hormonal feedback loop between the last segment of the small intestine and the
pyloric sphincter, involving substance GLP-1 is... - Answer-ileal brake
All of the following factors stimulate or increase thirst... - Answer--Increased plasma
osmolality detected by cerebral osmoreceptors
-Increased circulating levels of angiotensin II detected by angiotensin II receptors in a
specific region of the brain
-Increased gastric sodium load apparently detected by putative sodium receptors in the
abdomen
The most common digestive problem associated with carbohydrates is hypolactasia,
which is... - Answer-A reduced ability to digest the galactose-glucose bond of milk sugar
Phytate (phytic acid) is a... - Answer-derivative of the sugar-alcohol, inositol phosphate,
that chelates minerals in the diet and reduces their absorption
The "Adequate Macronutrient Distribution Range" is... - Answer-the percentage of daily
calories from each energy source that provides a reduced risk for chronic disease
A substance that is needed in a metabolic reaction or a tissue structure that cannot be
synthesized in humans may be generally referred to as... - Answer-an indispensable
nutrient
UL refers to which of the following statements? - Answer-"Tolerable Upper Intake Limit"
is a nutrient intake above which the risk fro harm begins to increase
"Reference height and weight" refers to... - Answer-Average height and weight of
American men and women with a "healthy" BMI, used to provide a representative
nutrient intake for a population for nutrients that should be consumed in quantities
based on body weight.
Diverse populations around the world consume sodium at levels greater than the Upper
Tolerable Intake Level set in the DRI's. One explanation for this "sodium appetite" is that
humans choose a sodium intake that does not trigger an excessive secretion of the
hormone... - Answer-Renin
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