Question 1

Canada's Food Guide promotes the proper selection of food.What is an example of how it advises Canadians to do this?
A)Read food labels to compare nutrient composition of foods.
B)Be physically active.
C)Enjoy eating as a social activity.
D)Read the micronutrient intake levels for life-stage groups that are included in the guide

Accepted Answer

Reading food labels to compare nutrient composition of foods is the best choice as it helps Canadians make informed decisions about the food they consume.

Question 2

If an individual's usual intake for a nutrient is equal to the recommended RDA,what is the probability that the individual is meeting their nutrient requirement?
A)33%
B)50%
C)75%
D)97%-98%

Accepted Answer

If an individual's usual intake for a nutrient is equal to the recommended RDA, there is a high probability (97%-98%) that they are meeting their nutrient requirement. This is because the RDA accounts for the needs of most healthy individuals in a given population, and is set at a level that is likely to meet the requirements of 97%-98% of the population.

Question 3

Steven has a digestive disorder that prevents him for absorbing an essential nutrient,which we will call compound X,from food.He can,however,absorb this nutrient in supplement form with the same efficiency as a healthy person can absorb it from food,and once absorbed,metabolize the nutrient with the same efficiency as any healthy person.So he goes to a pharmacy and buys a bottle of compound X tablets.The maximum daily dose of the supplement as recommended on the bottle's label is equivalent to the UL for compound X.Which statement best describes the health effects of the dose? Note that an RDA has been determined for compound X.
A)Because of Steven's difficulties with absorption,a dose at the UL is essential to ensure that he absorbs enough of the nutrient from the supplement.
B)The dose will probably do Steven no harm and is likely to provide additional health benefits over the RDA.
C)The dose is toxic and Steven should reduce it to no more than the RDA.
D)The dose will probably do not harm,but is unlikely to provide additional health benefits over the RDA.

Accepted Answer

The UL represents the highest dose that is unlikely to cause harm, so taking the supplement at the UL is probably not harmful. However, because an RDA has been established, there is no evidence that taking more than the RDA provides additional health benefits. Therefore, the best choice is D.

Question 4

The nutrient intake of a population is assessed using the EAR cut point method.Which result represents a population that is the best nourished with respect to this nutrient?
A)The proportion of the population with intakes less than the EAR is 50%.
B)The proportion of the population with intakes less than the EAR is 2%.
C)The proportion of the population with intakes less than the EAR is 18%.
D)The proportion of the population with intakes less than the EAR is 98%.

Accepted Answer

The EAR is the estimated average requirement for a nutrient and represents the amount of intake needed to meet the needs of 50% of the population. Therefore, if the proportion of the population with intakes less than the EAR is low, it means that a higher percentage of the population is meeting their nutrient needs. Choice B has the lowest proportion of the population with intakes less than the EAR, indicating that this population is the best nourished with respect to the nutrient being assessed.

Question 5

The recommended EAR for a nutrient is the amount estimated to meet the needs of what % percentage of individuals in the selected gender and life-stage group?
A)33%
B)75%
C)98%
D)50%

Accepted Answer

The Estimated Average Requirement (EAR) is the daily nutrient intake level estimated to meet the requirement of half (50%) of the healthy individuals in a particular life stage and gender group.

Question 6

"The proportion of a population that is NOT meeting its requirements is indicated by the proportion of the population with intakes below the EAR." What is being described?
A)EAR cut point method
B)A requirement distribution curve
C)The median of an intake distribution curve
D)Definition of the Estimated Average Requirement.

Accepted Answer

The EAR cut-point method is being described, which uses the Estimated Average Requirement (EAR) as a benchmark to determine the proportion of a population that is not meeting its nutritional requirements.

Question 7

Shown below are four intake distributions from four different groups for the same nutrient.Which is the most poorly nourished population with respect to the nutrient?
A) 
B) 
C) 
D)

Accepted Answer

The answer of Shown below are four intake distributions from...

Question 8

What was one of the factors influencing the development of the Dietary Reference Intakes,or DRIs?
A)the increased incidence of infectious diseases.
B)the high prevalence of nutrient deficiencies.
C)increased incidence of diet-related chronic diseases such as heart disease,cancer,and obesity.
D)the discovery of more essential nutrients.

Accepted Answer

The development of the Dietary Reference Intakes was influenced by the increased incidence of diet-related chronic diseases such as heart disease, cancer, and obesity. This highlighted the need for more accurate and comprehensive guidelines on nutrient intake to prevent and manage these conditions.

Question 9

Which statement regarding Tolerable Upper Intake Levels (ULs)is TRUE?
A)For some groups,there is an established benefit in consuming nutrients at this level.
B)For many nutrients,data are insufficient to establish a UL value.
C)Consuming nutrients at this level will probably cause adverse health effects.
D)The UL is set at the level of intake that causes adverse effects in 5% of the population.

Accepted Answer

Tolerable Upper Intake Levels (ULs) are set for nutrients at the highest level of intake that is unlikely to cause adverse health effects in almost all individuals in a specific age and gender group. For some nutrients, there is insufficient data to establish a UL value, and for many nutrients, consuming them at or above the UL may increase the risk of adverse effects. However, reaching the UL is not necessary or beneficial for overall health, as it represents the upper limit of safe intake.

Question 10

What is a dietary pattern?
A)A listing of the essential nutrients that must be included in a diet.
B)A listing of foods that should be limited in a diet.
C)A description of types and amounts of foods that are consumed in a diet.
D)A description of the recommended amounts of protein,carbohydrates and fat to prevent chronic disease.

Accepted Answer

A dietary pattern is a description of types and amounts of foods that are consumed in a diet. While options A, B, and D are related to dietary recommendations, they do not encompass the broader concept of a dietary pattern.

Question 11

Which of the following statements regarding RDAs is FALSE?
A)RDAs provide target intake amounts of nutrients for individuals.
B)The RDAs are one component of the DRIs.
C)The EARs are derived from the RDAs.
D)RDAs are often used in menu planning for individuals.

Accepted Answer

The statement "The EARs are derived from the RDAs" is false. The EARs (Estimated Average Requirements) are actually the starting point for calculating the RDAs (Recommended Dietary Allowances).

Question 12

In which situation is a UL for a nutrient most likely to be exceeded?
A)When large quantities of food are consumed by athletes.
B)When people are recovering from surgery and need more kcalories.
C)When supplements are taken in excess of recommended doses.
D)When people eat a nutrient-dense diet.

Accepted Answer

UL (Tolerable Upper Intake Level) is the maximum daily intake level of a nutrient that is unlikely to pose any risk of adverse health effects to most individuals in the general population. Taking supplements in excess of the recommended dose can lead to exceeding UL for certain nutrients, as supplements are highly concentrated sources of nutrients. Therefore, option C is the correct answer.

Question 13

There are two approaches to the formulation of nutrition recommendations.Canada's Food Guide is an example of which approach?
A)Nutrient-based approach
B)Food-based approach
C)Deficiency-based approach
D)Preventative approach.

Accepted Answer

Canada's Food Guide is an example of a food-based approach, which focuses on promoting a healthy dietary pattern through the consumption of a variety of foods from all food groups. This approach emphasizes the importance of balancing different types of foods to meet nutrient needs and includes guidance on portion sizes and recommended daily servings from each food group. The nutrient-based approach, on the other hand, focuses on specific nutrient recommendations and targets. The deficiency-based approach is outdated and no longer used, and the preventative approach is more broad and can encompass both food-based and nutrient-based approaches.

Question 14

Dietary standards were first developed in England in the 1860s.What was reason that the standards were first developed?
A)To determine the amount of food needed to prevent hunger and keep people alive so they could work.
B)To prevent nutrient deficiencies and to ensure that children drank milk.
C)To improve human health and to ensure that people consumed fruits and vegetables.
D)To protect the population from heart disease and to reduce obesity,

Accepted Answer

The dietary standards were first developed in England in the 1860s to determine the amount of food needed to prevent hunger and keep people alive so they could work. The primary concern was ensuring that people had enough food to sustain their physical labor and prevent starvation. Nutrient deficiencies and other health concerns were not the primary focus at this time. The development of dietary standards for health reasons came later.

Question 15

Which DRIs are recommended as targets for intake to ensure that an individual is almost certain of meeting his/her nutrient requirements?
A)EAR and UL
B)RDA and UL
C)RDA and AI
D)EAR and AI

Accepted Answer

The Recommended Dietary Allowance (RDA) and Adequate Intake (AI) are set to cover the needs of nearly all individuals in a specific age and gender group, ensuring nutrient requirements are met.

Question 16

Which is NOT a goal of the Dietary Reference Intakes (DRIs)?
A)prescribing what a person should eat each day
B)preventing nutrient deficiencies
C)promoting healthful eating
D)reducing chronic diseases

Accepted Answer

The Dietary Reference Intakes (DRIs) provide recommendations for the intake of nutrients and food components for different age and gender groups based on scientific research. They do not prescribe what a person should eat each day as individual needs may vary depending on factors such as physical activity, medical conditions, and personal preferences. The other goals of DRIs are preventing nutrient deficiencies, promoting healthful eating, and reducing chronic diseases.

Question 17

What is a criterion of adequacy for a nutrient?
A)It is a method of assessing nutrient intake.
B)It is a measurable indicator of the biological effect of a nutrient.
C)It is a method used to establish a UL.
D)It is always the level of nutrient in the blood.

Accepted Answer

A criterion of adequacy for a nutrient is a measurable indicator of the biological effect of the nutrient. This is important in determining how much of a nutrient is needed for optimal health and preventing deficiency or toxicity. It is not necessarily a method of assessing nutrient intake, establishing a UL, or always based on the level of nutrient in the blood.

Question 18

If a woman's usual intake for a nutrient is equal to the recommended Estimated Average Requirement what can be concluded about her intake?
A)She is almost certain to be meeting her requirement for that nutrient.
B)She is has a 50% chance of meeting her requirement for that nutrient.
C)She is almost certainly NOT meeting her requirement for that nutrient.
D)She has a 10% chance of meeting her requirement.

Accepted Answer

The Estimated Average Requirement (EAR) is the daily nutrient intake value that is estimated to meet the requirement of half the healthy individuals in a group. Therefore, if a woman's usual intake for a nutrient is equal to the EAR, she has a 50% chance of meeting her requirement for that nutrient.

Question 19

Which statement best distinguishes between an AI and an RDA?
A)While both DRIs can be used as target intakes for individuals,an AI is set when there is insufficient research data to set an RDA.
B)While both DRIs represent intakes that almost certainly guarantee that individuals are meeting their requirements,an RDA is set when there is insufficient research data to set an AI.
C)An AI is commonly used to establish recommendations for minerals and fibre,while RDAs are used for vitamins.
D)While an RDA represents an intake at which an individual can be almost certain of meeting their requirement,an individual with an intake equal to an AI (or greater)may or may not be meeting their requirement.

Accepted Answer

The answer of Which statement best distinguishes between an AI...

Question 20

Consider the following nutrient requirement curve for a vitamin.If the points A,B,and C correspond to the usual dietary intake of the vitamin for individuals A,B,and C respectively,indicate which statement best describes their nutrient status with respect to this nutrient. 
A)Individual A is meeting his requirement,but individuals B and C are not.
B)There is a higher probability that individual A is meeting his requirement,compared to individuals B and C,but it is possible that all of these individuals are meeting their requirements.
C)Individual B and C are meeting their requirements but individual A is not.
D)There is a lower probability that individual A is meeting his requirement than individuals B and C,but it is possible that none of these individuals are meeting their requirements.

Accepted Answer

Based on the nutrient requirement curve, it is likely that individual A is meeting their requirement as their intake falls on the higher end of the curve. However, it is also possible that individuals B and C are meeting their requirement as their intake falls within the range of the curve. Therefore, choice B is the best option as it acknowledges the higher probability of individual A meeting their requirement while also allowing for the possibility that all individuals are meeting their requirement.

Quiz 2: Nutrition Guidelines: Applying the Science of Nutrition

Canada's Food Guide promotes the proper selection of food.What is an example of how it advises Canadians to do this?

If an individual's usual intake for a nutrient is equal to the recommended RDA,what is the probability that the individual is meeting their nutrient requirement?

The nutrient intake of a population is assessed using the EAR cut point method.Which result represents a population that is the best nourished with respect to this nutrient?

The recommended EAR for a nutrient is the amount estimated to meet the needs of what % percentage of individuals in the selected gender and life-stage group?

"The proportion of a population that is NOT meeting its requirements is indicated by the proportion of the population with intakes below the EAR." What is being described?

Shown below are four intake distributions from four different groups for the same nutrient.Which is the most poorly nourished population with respect to the nutrient?

What was one of the factors influencing the development of the Dietary Reference Intakes,or DRIs?

Which statement regarding Tolerable Upper Intake Levels (ULs) is TRUE?

What is a dietary pattern?

Which of the following statements regarding RDAs is FALSE?

In which situation is a UL for a nutrient most likely to be exceeded?

There are two approaches to the formulation of nutrition recommendations.Canada's Food Guide is an example of which approach?

Dietary standards were first developed in England in the 1860s.What was reason that the standards were first developed?

Which DRIs are recommended as targets for intake to ensure that an individual is almost certain of meeting his/her nutrient requirements?

Which is NOT a goal of the Dietary Reference Intakes (DRIs) ?

What is a criterion of adequacy for a nutrient?

If a woman's usual intake for a nutrient is equal to the recommended Estimated Average Requirement what can be concluded about her intake?

Which statement best distinguishes between an AI and an RDA?

Consider the following nutrient requirement curve for a vitamin.If the points A,B,and C correspond to the usual dietary intake of the vitamin for individuals A,B,and C respectively,indicate which statement best describes their nutrient status with respect to this nutrient.