Q: A person consumes 60 grams of carbohydrate, 20 grams of protein, and 10 grams of fat in a meal. Calculate the total energy intake in kilocalories ($kcal$) for this meal. Use the following values: carbohydrate = $4~kcal/g$, protein = $4~kcal/g$, fat = $9~kcal/g$.

$60 \times 4 + 20 \times 4 + 10 \times 9 = 240 + 80 + 90 = 410~kcal$

Q: A nutrition label states that a food contains 8 grams of fat, 12 grams of carbohydrate, and 5 grams of protein per serving. What percentage of the total energy comes from fat? (Use: fat = $9~kcal/g$, carbohydrate = $4~kcal/g$, protein = $4~kcal/g$)

$\frac{8 \times 9}{8 \times 9 + 12 \times 4 + 5 \times 4} \times 100 = \frac{72}{72 + 48 + 20} \times 100 = \frac{72}{140} \times 100 \approx 51.4\%$

Question 1

Which of the following best describes the primary focus of nutrition research today?

Accepted Answer

Supporting health and preventing and treating chronic diseases

Question 2

Which of the following is NOT considered a component of wellness?

Accepted Answer

Financial health

Question 3

Which chronic disease is most strongly associated with poor nutrition?

Accepted Answer

Heart disease

Question 4

Which of the following nutrients is considered a micronutrient?

Accepted Answer

Vitamin C

Question 5

What is the definition of a kilocalorie (kcal)?

Accepted Answer

The amount of energy required to raise the temperature of 1 kg of water by 1° C

Question 6

Which macronutrient provides the most energy per gram?

Accepted Answer

Fat

Question 7

A person consumes 60 grams of carbohydrate, 20 grams of protein, and 10 grams of fat in a meal. Calculate the total energy intake in kilocalories ($kcal$) for this meal. Use the following values: carbohydrate = $4~kcal/g$, protein = $4~kcal/g$, fat = $9~kcal/g$.

Accepted Answer

$60 	imes 4 + 20 	imes 4 + 10 	imes 9 = 240 + 80 + 90 = 410~kcal$

Question 8

Which statement about vitamins is correct?

Accepted Answer

Fat-soluble vitamins can accumulate in the body and cause toxicity if consumed in excess

Question 9

Which of the following minerals is considered a major mineral, required in amounts greater than 100 mg/day?

Accepted Answer

Calcium

Question 10

Which Dietary Reference Intake (DRI) value represents the average daily intake level required to meet the needs of 97-98% of healthy people in a particular life stage and gender group?

Accepted Answer

Recommended Dietary Allowance (RDA)

Question 11

A nutrition label states that a food contains 8 grams of fat, 12 grams of carbohydrate, and 5 grams of protein per serving. What percentage of the total energy comes from fat? (Use: fat = $9~kcal/g$, carbohydrate = $4~kcal/g$, protein = $4~kcal/g$)

Accepted Answer

$\frac{8 	imes 9}{8 	imes 9 + 12 	imes 4 + 5 	imes 4} 	imes 100 = \frac{72}{72 + 48 + 20} 	imes 100 = \frac{72}{140} 	imes 100 \approx 51.4\%$

Question 12

Which of the following is a limitation of epidemiological studies in nutrition?

Accepted Answer

They cannot establish causation between dietary practices and health outcomes

Question 13

In a double-blind clinical trial, who is unaware of the group assignments?

Accepted Answer

Both the participants and the researchers

Question 14

Which of the following is a red flag for unreliable nutrition information?

Accepted Answer

Recommendations based on a single study

Question 15

Which of the following is a trustworthy source for nutrition information?

Accepted Answer

Academy of Nutrition and Dietetics

Question 16

Which statement about the human microbiome is correct?

Accepted Answer

It consists of the genes belonging to microorganisms inhabiting the human body

Question 17

Which of the following is an example of a functional food?

Accepted Answer

Yogurt containing probiotics

Question 18

Which of the following best describes the role of prebiotics?

Accepted Answer

They are nondigestible ingredients that stimulate the growth and/or activity of helpful bacteria

Question 19

Which Acceptable Macronutrient Distribution Range (AMDR) is recommended for protein intake?

Accepted Answer

10-25% of total energy intake

Chapter 1: Nutrition—Linking Food, Function, and Health

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