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NTR 401- Exam 1 Questions with Complete Answers
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NTR 401- Exam 1 Questions with Complete Answers
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NTR 401- Exam 1 Questions withComplete Answers
"Reference height and weight" refers to:
a.) the body size that will result from a healthy individual consuming the Recommended
Dietary Allowance for all nutrients
b.) average height and weight of American men and women, used to provide a
representative nutrient intake for a population for nutrients that should be consumed in
quantities based on body weight.
c. an individual's weight divided by the square of their height
d. a table relating the ideal weights for an individual of different heights - Answer-b.)
average height and weight of American men and women, 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 DRIs. One explanation for this "sodium appetite" is that
humans choose a sodium intake that does not trigger an excessive secretion of the
hormone________________________.
a. vasopressin
b. renin
c. leptin
d. grelin - Answer-b. Renin
Biological scientist study the regulation of food intake in terms of the gut-brain and
adipose-brain hormonal axes. In contrast, nutritionist who take a more holistic view of
human ecology, sociology, psychology, and public health in their research, frequently
refer to________________, which can include the concept of________________ to
explain the current prevalence of obesity.
a. the socioecological model; neuroeconomics
b. paleological diets; vegetariansm
c. food deserts; geophagy
d. cell culture model systems; mitochondrial energy transformation - Answer-a. the
socioecological model; neuroeconomics
The DRI value that is most likely to be applicable to 100% of the population, i.e. not
overlap the normal distribution is
a. UL
b. EAR
c. RDA
d. AMDR - Answer-a. UL
The physiological principle that allows the kidney to excrete urine that can be either
more or less dilute than the blood plasma it originates from.
, a. the epithelial cells lining the urinary bladder pump salt and urea into the urine to
concentrate it, or pump water in to make it more dilute
b. sodium is pumped out of the collecting duct under the influence of atrial natriuretic
peptide (ANP), to concentrate sodium in the interior (medulla) of the kidney
c. insoluble dietary fiber is used to pull water osmotically from the urine as it pass
through the functional unit (nephrons) or the kidney
d. countercurrent sodium pumping in the loop of Henle creates a high concentration of
salt in the interior of the kidney, and the collecting ducts have variable permeability to
water. - Answer-d. countercurrent sodium pumping in the loop of Henle creates a high
concentration of salt in the interior of the kidney, and the collecting ducts have variable
permeability to water.
Which of the following components does NOT have an important role in the breakdown
and absorption of fats in the intestine?
a. salivary lipase
b. primary bile acids
c. pancreatic lipase
d. fatty acid micelled - Answer-a. salivary lipase
The dietary component that is the precursor of monoacylglycerol and 2 molecules of
free fatty acid in the gut is called
a. triglyceride
b. plant sterol
c. phospholipid
d. bile - Answer-a. triglyceride
According to the Institute of Medicine's Dietary References Intake guidelines, a
nutritionist using the RDA to plan meals for a population must take into account several
sources of variation that allow calculation of the percent of the population that would
meet their requirements. Among the following, the LEAST likely IMPORTANT source of
uncertainty would be:
a. the nutrient requirements of individuals vary around the mean requirement of the
population
b. although the meal plan may meet the population's nutrient requirements, individuals
will consume different amount of the foods offered
c. the nutrient contend of the foods can vary due to storage, ripeness, soil types, and
other growing conditions
d. organic foods have different nutrient content than conventionally grown foods, as is
usually noted on the labels or in the nutrient database. - Answer-d. organic foods have
different nutrient content than conventionally grown foods, as is usually noted on the
labels or in the nutrient database.
The best way to change the dietary intake of a free-living population for a given nutrient
is to:
a. educate people about food choices or modify the nutrient profile of foods most
commonly eaten.
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