Q: A food contains 15 grams of carbohydrates, 10 grams of fat, and 5 grams of protein. Calculate the total kilocalories in this food using the appropriate energy values for each macronutrient.

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

Q: A person consumes 2,000 kcal per day. According to the Dietary Guidelines for Americans, what is the maximum number of kilocalories that should come from saturated fat?

$$ 2,000 \times 0.10 = 200 \text{ kcal} $$

Question 1

Which of the following best defines the term 'nutrition' as used in the scientific context?

Accepted Answer

The study of how food nourishes our bodies and influences our health.

Question 2

Which of the following is NOT considered an essential nutrient?

Accepted Answer

Alcohol

Question 3

A food contains 15 grams of carbohydrates, 10 grams of fat, and 5 grams of protein. Calculate the total kilocalories in this food using the appropriate energy values for each macronutrient.

Accepted Answer

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

Question 4

Which of the following statements about micronutrients is TRUE?

Accepted Answer

Micronutrients include vitamins and minerals.

Question 5

A patient presents with fatigue and paleness. Blood tests reveal low hemoglobin and depleted iron stores. Which nutritional status best describes this scenario?

Accepted Answer

Undernutrition

Question 6

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

Accepted Answer

A peer-reviewed journal article from the Journal of the Academy of Nutrition and Dietetics

Question 7

Which of the following is a key recommendation from the Dietary Guidelines for Americans 2025-2030?

Accepted Answer

Limit intake of highly processed foods and added sugars.

Question 8

Which of the following best describes the function of vitamins in the body?

Accepted Answer

They function as coenzymes in energy metabolism.

Question 9

A researcher wants to test whether a new vitamin supplement reduces the incidence of colds. She randomly assigns participants to receive either the supplement or a placebo, and neither the participants nor the researchers know who receives which. What type of study is this?

Accepted Answer

Double-blind experimental trial

Question 10

Which of the following is an example of a nutrient-dense food?

Accepted Answer

A slice of whole grain bread

Question 11

Which of the following best describes the concept of bioavailability?

Accepted Answer

The body's ability to absorb and use a nutrient.

Question 12

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

Accepted Answer

Supports fluid balance and nutrient transport

Question 13

A person consumes 2,000 kcal per day. According to the Dietary Guidelines for Americans, what is the maximum number of kilocalories that should come from saturated fat?

Accepted Answer

$$ 2,000 	imes 0.10 = 200 	ext{ kcal} $$

Question 14

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

Accepted Answer

It is adequate, moderate, balanced, and varied.

Question 15

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

Accepted Answer

Yogurt containing probiotics

Question 16

Which of the following best describes a case-control study?

Accepted Answer

A study that compares groups with and without a condition to identify factors that may influence disease.

Question 17

Which of the following is a possible consequence of over-nutrition?

Accepted Answer

Toxic damage to the body, such as iron toxicity

Question 18

Which of the following is a recommended serving size for protein foods according to MyPlate?

Accepted Answer

1 ounce of meat, poultry, or fish

Question 19

Which of the following is a limitation of epidemiologic studies?

Accepted Answer

They can only show associations, not causation.

Question 20

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

Accepted Answer

Making observations and forming a hypothesis

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

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