Q: A food contains 15 grams of carbohydrates, 10 grams of fat, and 5 grams of protein. What is the total energy content in kilocalories (kcal)? Use the following values: $$4 \text{ kcal/g}$$ for carbohydrates and protein, $$9 \text{ kcal/g}$$ for fat.

$$(15 \times 4) + (10 \times 9) + (5 \times 4) = 60 + 90 + 20 = 170 \text{ kcal}$$

Question 1

Which of the following is NOT considered an essential nutrient for humans?

Accepted Answer

Alcohol

Question 2

A food contains 15 grams of carbohydrates, 10 grams of fat, and 5 grams of protein. What is the total energy content in kilocalories (kcal)? Use the following values: $$4 	ext{ kcal/g}$$ for carbohydrates and protein, $$9 	ext{ kcal/g}$$ for fat.

Accepted Answer

$$(15 	imes 4) + (10 	imes 9) + (5 	imes 4) = 60 + 90 + 20 = 170 	ext{ kcal}$$

Question 3

Which of the following statements best describes the concept of nutrient density?

Accepted Answer

Foods that supply the highest level of nutrients for the lowest number of calories

Question 4

Which chronic disease is most strongly associated with poor nutrition and is the primary link between nutrition and mortality in the United States?

Accepted Answer

Obesity

Question 5

According to the Dietary Guidelines for Americans (2025-2030), what is the recommended daily intake of protein for adults?

Accepted Answer

1.2-1.6 g per kg body weight

Question 6

Which of the following is a micronutrient that does NOT provide energy?

Accepted Answer

Vitamin

Question 7

A researcher wants to study the effect of a new dietary supplement on blood pressure. She randomly assigns participants to either a supplement group or a placebo group, and neither the participants nor the researchers know which group each participant is in. What type of study is this?

Accepted Answer

Double-blind experimental trial

Question 8

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

Accepted Answer

A peer-reviewed journal

Question 9

Which of the following best describes the scientific method as used in nutrition research?

Accepted Answer

Making observations, forming a hypothesis, designing an experiment, collecting and analyzing data, drawing conclusions, and developing a theory

Question 10

Which of the following foods is considered a functional food due to its biologically active ingredients that provide health benefits beyond basic nutrition?

Accepted Answer

Probiotic yogurt

Question 11

A person consumes a diet high in copper, which limits the absorption of another mineral. Which mineral is most likely affected?

Accepted Answer

Zinc

Question 12

Which of the following is NOT a step in the Nutrition Care Process used by registered dietitians?

Accepted Answer

Advertising

Question 13

Which of the following is an example of undernutrition?

Accepted Answer

Depletion of iron stores resulting in fatigue and paleness

Question 14

Which food group is emphasized as the primary source of fuel for the body, especially for the brain?

Accepted Answer

Carbohydrates

Question 15

Which of the following is a real-world example of a case-control study in nutrition research?

Accepted Answer

Comparing physical activity levels between people with normal blood pressure and those with high blood pressure

Question 16

Which of the following is NOT a function of water in the human body?

Accepted Answer

Providing energy

Question 17

Which of the following is a key concept included in the Dietary Guidelines for Americans?

Accepted Answer

Limit highly processed foods and added sugars

Question 18

Which of the following best describes bioavailability?

Accepted Answer

The body's ability to absorb and use nutrients

Question 19

Which of the following is a plausible reason for increased iron requirements in an individual?

Accepted Answer

Pregnancy

Question 20

Which of the following is a characteristic of a healthful diet?

Accepted Answer

Adequate, moderate, balanced, varied, and nutrient dense

Principles of Nutrition: Linking Food, Health, and Dietary Guidelines

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