FIRST PUBLISH OCTOBER 2024
NTR 301 Final Exam Practice Questions
and Answers
Which of the following statements about essential nutrients is/are correct? - Ans:✔✔--cholesterol is not
an essential nutrient
-the only way to obtain essential nutrients is by eating food that provides. them
-a protein is an example of an essential nutrient
Which of the following statements about vitamins are correct? - Ans:✔✔--vitamins are present in our
bodies in small amounts
-vitamins have requirements that are relatively small
-vitamins are present in food in small amounts
Which of the following statements is CORRECT regarding the term "calorie" (or kilocalorie)? Pick all that
apply. - Ans:✔✔--It is a unit of heat equal to the amount of energy necessary to raise 1000 g of water by
1 degrees C
-It is a way to quantify the energy that fuels the body from food
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After completing your food diary for this class, you see that you consume 300% of the DRI for Vitamin
B6, 100% of the DRI for Vitamin B12, and 150% of the DRI for Calcium, and 40% of the DRI for Vitamin C.
Which of the following statements is/are CORRECT? (Vitamins C, B6, and B12 are water soluble vitamins
and excess amounts are excreted in the urine). - Ans:✔✔--your intake of vitamin C is marginal
-you should increase your intake of vitamin C
Which of the following statements are CORRECT regarding the DRI's for vitamins, minerals, and protein?
- Ans:✔✔--they are set at fixed, but generous amounts
-they are expressed in gram, milligram, and microgram amounts
-they are recommended levels of nutrients that should be met on average, over a period of time, not
necessarily everyday
Anna was talking to her great-grandmother (Ethel) about nutrient needs now compared to when Ethel
was younger. Which of the following are ACCURATE conversations they may have about the differences
in the DRIs that they both know/knew? - Ans:✔✔--the DRIs Anna is familiar with take into consideration
prevention of chronic diseases
-the DRIs Ethel is familiar with take into consideration the prevention of deficiency diseases
Why is it so much more difficult to study heart disease (a chronic disease) than it is to study scurvy (a
deficiency disease)? - Ans:✔✔--Deficiency diseases only have one, direct cause
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-chronic diseases have many potential causes, including diet and other lifestyle factors
-chronic diseases take years to develop, while deficiency diseases sometimes only take weeks
Which of the following statements is/are CORRECT regarding the definition of marginal in regards to
nutrient intake? - Ans:✔✔--Many factors can contribute to marginal intakes of nutrients in the US,
including disability, education, and socioeconomic status
Why were the DRIs initially developed in the 1940s? - Ans:✔✔--micronutrient deficiencies were a
problem and were preventing people from being fit to fight in war
Which of the following statements is correct about the DRIs for protein? - Ans:✔✔--there is a DRI fro
protein expressed as a percent because it contributes calories to our diet
-there is a DRI for protein expressed as grams per unit of body weight to make sure that other functions
are being met
Upon completing your food diary for this class, you discover that your intake of iron over the 5-7 day
period exceeds the DRI. However, you're surprised by that finding because you're actually anemic. Which
of the following statements could explain what is going on in this scenario? - Ans:✔✔--dietary intake
does not always predict what is actually happening inside the body
-you could have consumed enough iron during the week you recorded your food intake, but the food
diary is not reflective of iron intake over a longer period of time
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Confounding factor - Ans:✔✔-Associated with the exposure and the outcome and can make the two
appear more related to each other than they really are.
Experimental group - Ans:✔✔-The participants in a study who receive the real treatment or intervention
under investigation.
Control Group - Ans:✔✔-A group of individuals with characteristics that match the group being treated
in an intervention study but who receive a sham treatment or no treatment at all.
Placebo - Ans:✔✔-A sham or neutral treatment given to a control group.
Epidemiological study - Ans:✔✔-A study of a population that searches for possible correlations between
nutrition factors and health patterns over time.
A clinical trial is being done to find out if there is a link between breast cancer and diets that are high in
fat. However, people who consume diets high in fat may also have other characteristics of their lifestyle
that increase their risk for breast cancer. How can researchers overcome the problem of these
confounding factors in a clinical trial? - Ans:✔✔--researchers can randomly assign participants to a
treatment or control group
Allen is a researcher studying how well calcium and phosphorus are absorbed in the GI tract of babies
that are born too early. He is researching various diets to see which diet provides the most available type
of nutrients for absorption. Why would Allen choose to do this type of study using in-vitro methods
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