Q: If a food contains 10 grams of protein, 5 grams of fat, and 20 grams of carbohydrate, what is its total energy content in kilocalories? (Use: $$1\text{g protein} = 4\text{kcal}$$, $$1\text{g fat} = 9\text{kcal}$$, $$1\text{g carbohydrate} = 4\text{kcal})$$

$$(10 \times 4) + (5 \times 9) + (20 \times 4) = 40 + 45 + 80 = 165\text{ kcal}$$

Question 1

Which of the following best describes the primary function of carbohydrates in the human body?

Accepted Answer

To serve as the main source of energy for cells

Question 2

Which acronym refers to the recommended average daily nutrient intake level based on observed or experimentally determined estimates of nutrient intake by a group of healthy people?

Accepted Answer

AI

Question 3

A nutrition researcher is funded by a major food company to study the health effects of their product. Which concept does this scenario best illustrate?

Accepted Answer

Conflict of interest

Question 4

Which step in the scientific method involves making a prediction that can be tested?

Accepted Answer

Formulating a hypothesis

Question 5

Which type of research study is best suited for determining cause-and-effect relationships between a nutrient and a health outcome?

Accepted Answer

Randomized controlled trial

Question 6

Which government-based group is responsible for developing the Dietary Guidelines for Americans?

Accepted Answer

United States Department of Agriculture (USDA)

Question 7

A Registered Dietitian Nutritionist (RDN) differs from a nutritionist in which of the following ways?

Accepted Answer

RDNs must complete accredited coursework and supervised practice

Question 8

Which of the following is NOT a macronutrient?

Accepted Answer

Vitamin C

Question 9

If a food contains 10 grams of protein, 5 grams of fat, and 20 grams of carbohydrate, what is its total energy content in kilocalories? (Use: $$1	ext{g protein} = 4	ext{kcal}$$, $$1	ext{g fat} = 9	ext{kcal}$$, $$1	ext{g carbohydrate} = 4	ext{kcal})$$

Accepted Answer

$$(10 	imes 4) + (5 	imes 9) + (20 	imes 4) = 40 + 45 + 80 = 165	ext{ kcal}$$

Question 10

Which of the following best describes nutrigenomics?

Accepted Answer

The study of how nutrients affect gene expression

Question 11

Which of the following is an example of a prebiotic?

Accepted Answer

Inulin found in chicory root

Question 12

Phytochemicals are beneficial because they:

Accepted Answer

Act as antioxidants and may reduce disease risk

Question 13

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

Accepted Answer

A peer-reviewed scientific journal

Question 14

Which of the following best describes the difference between a food allergy and a food intolerance?

Accepted Answer

Food allergies involve the immune system, while food intolerances do not

Question 15

A person with celiac disease must avoid foods containing which protein?

Accepted Answer

Gluten

Question 16

Which of the following is a symptom of a food allergy rather than a food intolerance?

Accepted Answer

Hives and swelling

Question 17

Which of the following is a function of the liver in nutrition?

Accepted Answer

Producing bile to aid in fat digestion

Question 18

Which hormone is primarily responsible for stimulating hunger?

Accepted Answer

Ghrelin

Question 19

Which of the following best describes the difference between digestion and absorption?

Accepted Answer

Digestion is the breakdown of food; absorption is the uptake of nutrients into the bloodstream

Question 20

A patient is diagnosed with GERD. Which nutrition-related recommendation is most likely to alleviate symptoms?

Accepted Answer

Eat smaller, more frequent meals

Nutrition: Linking Food and Health – Chapter 1 Study Guide

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