Q: If a food contains 10 grams of carbohydrate, 5 grams of protein, and 2 grams of fat, what is its total energy content in kilocalories? (Use: $$4 \text{ kcal/g}$$ for carbohydrate and protein, $$9 \text{ kcal/g}$$ for fat)

$$10 \times 4 + 5 \times 4 + 2 \times 9 = 40 + 20 + 18 = 78 \text{ kcal}$$

Q: A nutrition label states that a food contains 8 grams of fat, 15 grams of carbohydrate, and 7 grams of protein. Calculate the total energy content in kilocalories.

$$8 \times 9 + 15 \times 4 + 7 \times 4 = 72 + 60 + 28 = 160 \text{ kcal}$$

Question 1

Which of the following best describes the primary focus of the science of nutrition?

Accepted Answer

Examining how food nourishes our bodies and influences health

Question 2

Which of the following is NOT one of the six groups of nutrients found in foods?

Accepted Answer

Fiber

Question 3

A kilocalorie (kcal) is defined as:

Accepted Answer

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

Question 4

Which of the following nutrients is considered a macronutrient?

Accepted Answer

Carbohydrate

Question 5

If a food contains 10 grams of carbohydrate, 5 grams of protein, and 2 grams of fat, what is its total energy content in kilocalories? (Use: $$4 	ext{ kcal/g}$$ for carbohydrate and protein, $$9 	ext{ kcal/g}$$ for fat)

Accepted Answer

$$10 	imes 4 + 5 	imes 4 + 2 	imes 9 = 40 + 20 + 18 = 78 	ext{ kcal}$$

Question 6

Which of the following statements about micronutrients is TRUE?

Accepted Answer

They assist in the regulation of physiologic processes

Question 7

Which of the following is a function of water in the body?

Accepted Answer

Regulating body temperature

Question 8

The Dietary Reference Intakes (DRIs) are designed to:

Accepted Answer

Provide reference values for nutrient intake to maintain health and prevent disease

Question 9

Which of the following best describes the Acceptable Macronutrient Distribution Range (AMDR) for carbohydrates?

Accepted Answer

The range of intake for carbohydrates that is associated with reduced risk of chronic disease while providing adequate intakes of essential nutrients

Question 10

A patient presents with symptoms of pellagra. Which nutrient deficiency is most likely responsible?

Accepted Answer

Niacin (Vitamin B3)

Question 11

Which of the following is NOT a domain of nutritional status assessment?

Accepted Answer

Genetic Testing

Question 12

Which of the following is a key step in the scientific method as applied to nutrition research?

Accepted Answer

Formulating a hypothesis based on observations

Question 13

Which type of research study is best suited for establishing cause-and-effect relationships in nutrition?

Accepted Answer

Randomized controlled trial

Question 14

A nutrition label states that a food contains 8 grams of fat, 15 grams of carbohydrate, and 7 grams of protein. Calculate the total energy content in kilocalories.

Accepted Answer

$$8 	imes 9 + 15 	imes 4 + 7 	imes 4 = 72 + 60 + 28 = 160 	ext{ kcal}$$

Question 15

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

Accepted Answer

A peer-reviewed scientific journal

Question 16

Which of the following best describes the role of proteins in the body?

Accepted Answer

Support tissue growth, repair, and maintenance

Question 17

Which of the following is an example of a micronutrient that acts as a cofactor in enzymatic reactions?

Accepted Answer

Vitamin B6

Question 18

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

Accepted Answer

They are unable to establish cause-and-effect relationships

Question 19

Which of the following is a sign of credible nutrition information on a website?

Accepted Answer

The site provides references to peer-reviewed research

The Science of Nutrition: Linking Food, Function, and Health

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