Q: A food contains 15 grams of fat, 16 grams of carbohydrate, and 6 grams of protein. What is the total caloric content of this food?

$$15 \times 9 + 16 \times 4 + 6 \times 4 = 223$$ kcal

Q: A person consumes 2,000 kcal per day. If 30% of their calories come from fat, how many grams of fat do they consume daily?

$$\frac{0.3 \times 2000}{9} = 66.7$$ grams

Q: A nutrition label states that a serving contains 8 grams of fat, 25 grams of carbohydrate, and 5 grams of protein. What percentage of total calories comes from fat?

$$\frac{8 \times 9}{8 \times 9 + 25 \times 4 + 5 \times 4} \times 100 = 25.7\%$$

Question 1

Which of the following best describes the scientific study of nutrition?

Accepted Answer

The study of the food we eat and how our body uses the chemicals from that food.

Question 2

Which of the following is NOT considered a macronutrient?

Accepted Answer

Vitamin C

Question 3

A food contains 15 grams of fat, 16 grams of carbohydrate, and 6 grams of protein. What is the total caloric content of this food?

Accepted Answer

$$15 	imes 9 + 16 	imes 4 + 6 	imes 4 = 223$$ kcal

Question 4

Which of the following statements about micronutrients is TRUE?

Accepted Answer

Micronutrients assist in regulating body processes.

Question 5

Which of the following is an example of a water-soluble vitamin?

Accepted Answer

Vitamin C

Question 6

A person consumes 2,000 kcal per day. If 30% of their calories come from fat, how many grams of fat do they consume daily?

Accepted Answer

$$\frac{0.3 	imes 2000}{9} = 66.7$$ grams

Question 7

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

Accepted Answer

They provide structure to bones, muscle, and skin.

Question 8

Which of the following is a correct statement about the human microbiota?

Accepted Answer

It plays important roles in digestion and immune function.

Question 9

Which of the following is an example of a complex carbohydrate?

Accepted Answer

Starch

Question 10

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

Accepted Answer

They provide insulation and protect organs.

Question 11

Which of the following is an inorganic nutrient?

Accepted Answer

Water

Question 12

Which of the following best describes the process of dimensional analysis?

Accepted Answer

Multiplying a value by a conversion factor so that undesired units cancel out, leaving the desired units.

Question 13

Which of the following is a correct statement about the energy content of macronutrients?

Accepted Answer

Proteins provide 4 kcal/g.

Question 14

A nutrition label states that a serving contains 8 grams of fat, 25 grams of carbohydrate, and 5 grams of protein. What percentage of total calories comes from fat?

Accepted Answer

$$\frac{8 	imes 9}{8 	imes 9 + 25 	imes 4 + 5 	imes 4} 	imes 100 = 25.7\%$$

Question 15

Which of the following is a key difference between saturated and unsaturated fats?

Accepted Answer

Unsaturated fats have double bonds, making them less able to pack tightly together.

Question 16

Which of the following is a potential health effect of consuming trans fats?

Accepted Answer

Increased risk of cardiovascular disease

Question 17

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

Accepted Answer

Regulates temperature and cushions organs

Question 18

Which of the following best describes the role of the hypothalamus in eating behavior?

Accepted Answer

It triggers feelings of hunger or satiation by integrating signals from the body.

Question 19

Which of the following is a correct statement about the scientific method as applied to nutrition research?

Accepted Answer

Observations can be biased or incomplete.

Question 20

Which of the following is a correct application of the concept of relative risk in nutrition studies?

Accepted Answer

Relative risk compares the likelihood of an outcome between two groups.

Introduction to Nutrition: Core Concepts and Foundations

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