Q: A food contains 10 grams of carbohydrate, 5 grams of protein, and 2 grams of fat. Calculate the total calories in this food using the appropriate energy values for each macronutrient.

$$10 \times 4 + 5 \times 4 + 2 \times 9 = 40 + 20 + 18 = 78$$ calories

Q: If a food contains 8 grams of fat, 12 grams of carbohydrate, and 6 grams of protein, what percentage of the total calories comes from fat? (Use $$4$$ kcal/g for carbohydrate and protein, $$9$$ kcal/g for fat.)

$$\frac{8 \times 9}{8 \times 9 + 12 \times 4 + 6 \times 4} \times 100 = \frac{72}{72 + 48 + 24} \times 100 = \frac{72}{144} \times 100 = 50\%$$

Question 1

Which of the following best describes an essential nutrient?

Accepted Answer

A nutrient that must be obtained from the diet because the body cannot make it or cannot make enough of it.

Question 2

A food contains 10 grams of carbohydrate, 5 grams of protein, and 2 grams of fat. Calculate the total calories in this food using the appropriate energy values for each macronutrient.

Accepted Answer

$$10 	imes 4 + 5 	imes 4 + 2 	imes 9 = 40 + 20 + 18 = 78$$ calories

Question 3

Which of the following is an example of a micronutrient?

Accepted Answer

Vitamin C

Question 4

A researcher wants to test the effect of a new dietary supplement on cholesterol levels. She randomly assigns participants to receive either the supplement or a placebo, and neither the participants nor the researchers know who receives which treatment. What type of study is this?

Accepted Answer

Double-blind experimental study

Question 5

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

Accepted Answer

45-65% of total calories

Question 6

If a food contains 8 grams of fat, 12 grams of carbohydrate, and 6 grams of protein, what percentage of the total calories comes from fat? (Use $$4$$ kcal/g for carbohydrate and protein, $$9$$ kcal/g for fat.)

Accepted Answer

$$\frac{8 	imes 9}{8 	imes 9 + 12 	imes 4 + 6 	imes 4} 	imes 100 = \frac{72}{72 + 48 + 24} 	imes 100 = \frac{72}{144} 	imes 100 = 50\%$$

Question 7

Which of the following is NOT required to be listed on a Nutrition Facts Panel?

Accepted Answer

Calories from fat

Question 8

Which of the following statements about the difference between enriched, fortified, and whole grains is correct?

Accepted Answer

Whole grains contain the bran, germ, and endosperm, while enriched grains have some nutrients added back after processing.

Question 9

Which of the following is the MOST influential factor in determining food choices for most people in the United States?

Accepted Answer

Personal preference (taste)

Question 10

A patient is experiencing frequent heartburn. Which dietary recommendation would most likely help alleviate their symptoms?

Accepted Answer

Eat smaller, more frequent meals

Question 11

Which of the following best describes the function of villi in the small intestine?

Accepted Answer

They increase the surface area for nutrient absorption.

Question 12

Which of the following nutrients is absorbed directly into the lymphatic system rather than the vascular (blood) system?

Accepted Answer

Long-chain fatty acids

Question 13

Which of the following is a characteristic of a nutrient-dense food?

Accepted Answer

Low in calories and high in nutrients

Question 14

Which of the following best describes the role of the hormone secretin in digestion?

Accepted Answer

Stimulates the pancreas to release bicarbonate-rich juices

Question 15

A food label lists ingredients in the following order: whole wheat flour, sugar, canola oil, salt. What does this order indicate?

Accepted Answer

Ingredients are listed by the amount present, from most to least by weight.

Question 16

Which of the following is a correct statement about the Recommended Dietary Allowance (RDA)?

Accepted Answer

It is the average daily intake level sufficient to meet the nutrient requirements of nearly all (97-98%) healthy individuals.

Question 17

Which of the following is an example of a structure-function claim on a food label?

Accepted Answer

"Calcium builds strong bones."

Question 18

Which of the following is a key recommendation of the Dietary Guidelines for Americans?

Accepted Answer

Limit intake of added sugars to less than 10% of total calories per day.

Question 19

Which of the following best describes peristalsis?

Accepted Answer

The rhythmic muscular contractions that move food through the GI tract

Question 20

A person consumes 2,000 kcal per day. According to the AMDR, how many grams of protein should they consume daily? (AMDR for protein: 10-35% of total calories; 4 kcal/g for protein)

Accepted Answer

$$\frac{0.10 	imes 2000}{4} = 50 to$$ $$\frac{0.35 	imes 2000}{4} = 175$$ grams

NFS 2323 Exam 1 Study Guide – Step-by-Step Nutrition Guidance

Guida di studio - Domande di pratica

Study guide - Flashcard