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NCSU NTR 401 Quizzes 1-10 with Correct Answers
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NCSU NTR 401 Quizzes 1-10 with Correct Answers
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NCSU NTR 401 Quizzes 1-10 withCorrect Answers
Which year did Elmer McCollum, Thomas Osborne, and Lafayette Mendel develop a
new approach to the search for vitamins as well as the discovery of additional essential
amino acids, such as lysine, sulfur-containing amino acids, and histidine? - Answer-
1910
The AI, or adequate intake, is a recommendation used when - Answer-there are
insufficient data to establish the EAR
Nutrients that are defined as "conditionally essential" are: - Answer-not synthesized in
adequate amounts in specific populations
The DRI guideline that meets the nutrient intake of 97-98% of the population is -
Answer-RDA
Which of the following is NOT included in the list of essential nutrients for humans
described by Alfred Harper? - Answer-phytonutrients
In contrast to RDAs, the DRIs now include "non-classical nutrients." What is an example
of a non-classical nutrient? - Answer-cholesterol
Of the numerous trace or ultra trace elements, which two have the strongest evidence
for essentiality? - Answer-Chromium, Boron
The RDA is greater than the average requirement for all nutrients EXCEPT: - Answer-
energy
What was the name of the dietary guidance first published for American consumers in
1941 to prevent nutrient deficiencies? - Answer-Recommended Dietary Allowance
The subcommittees charged with determining DRIs followed a common "road map" so
that the different committees would address the evaluation of different nutrients the
same way. What are likely concepts found in the "road map" guidelines for committees?
- Answer-create a new system that will determine the exact requirement of every
individual in a population
The LEAST LIKELY source of variation in predicting the percentage of a population that
might not meet their nutrient requirement when given a recommended nutrient intake
from a planned diet it: - Answer-the completely different types of endpoints for
determining adequacy for nutrients that have an RDA compared to those that have an
AI
, Match the following hormones with their tissue of origin.
1-glucagon-like peptide 1 (GLP-1)
2- cholecystokinin
3- insulin
4- ghrelin
5-leptin - Answer-1- ileum of jejunum (L-cells)
2- duodenum
3- pancreases (B-cells)
4-stomach
5- fat cells
Which of the following statement illustrates a nutrient whose EAR or AI is based on
amount stored in the tissues? - Answer-The AI for vitamin D is based on the serum 25-
OH cholecalciferol
The region of the brain that integrates the signals contolling food intake is - Answer-
arcuate nucleus of the hypothalamus
The central nervous system integrates appetite, hunger and satiety signals that come
from ALL of the following organ systems EXCEPT: - Answer-skeletal system
Which tissue(s) are NOT known to secrete a hormone that regulates food intake? -
Answer-heart
The emerging field of neuroeconomics seeks to understand the neural basis of human
choice behavior. Human behavior that results in overeating relative to homeostatic
needs and in spite of endocrine feedback mechanisms is LEAST well explained by
which of the following concepts? - Answer-Being overweight or obese is seen as high
social status, so people deliberately ignore their feelings of satiety in order to gain as
much weight as possible.
Which statement does NOT accurately state a theory of food intake regulate that has
been proposed with reasonable support during the last 50 years? - Answer-Bacteria in
the colon secrete factors that cause hunger when they sense their nutrient supply is
getting low.
Which TWO hormones increase as the duration of fasting gets longer? - Answer-
Ghrelin, glucagon
hich of the following factors has the LEAST impact on the steady-state homeostasis of
nutrients? - Answer-hair and nail growth and shedding skin cells
Using the concept that body fat mass is regulated by an endocrine feedback loop
involving leptin, adipose tissue would be considered be - Answer-both the endocrine
organ and the regulated variable
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