DHN 101 Exam 1 Latest 2027 – Questions
& Answers with Rationales | A+
Guaranteed Pass
Section 1: Nutrition Fundamentals & Food Choices (Questions 1–35)
1. What is the primary purpose of nutrition science?
A) To eliminate all dietary fats
B) To study how nutrients and food components affect health and body function
C) To determine which foods taste best
D) To replace physical activity with dietary supplements
Correct Answer: B) To study how nutrients and food components affect health and
body function
Nutrition science examines how food, nutrients, and other dietary components interact with
the body. It includes digestion, absorption, metabolism, growth, disease prevention, and
overall health. Nutrition is much broader than simply determining which foods are healthy or
unhealthy.**
,2. Which of the following is considered an essential nutrient?
A) Alcohol
B) Dietary fiber only
C) Vitamin C
D) Caffeine
Correct Answer: C) Vitamin C
An essential nutrient is a substance the body cannot make in sufficient amounts and
therefore must obtain from the diet. Vitamins, minerals, certain amino acids, certain fatty
acids, and water are essential nutrients. Alcohol and caffeine are not essential nutrients.**
3. Which group contains the six major classes of nutrients?
A) Protein, sugar, starch, cholesterol, alcohol, and water
B) Carbohydrates, lipids, proteins, vitamins, minerals, and water
C) Vitamins, herbs, supplements, fiber, alcohol, and protein
D) Carbohydrates, enzymes, hormones, water, alcohol, and minerals
Correct Answer: B) Carbohydrates, lipids, proteins, vitamins, minerals, and water
The six recognized classes of nutrients are carbohydrates, lipids, proteins, vitamins,
minerals, and water. Carbohydrates, lipids, and proteins provide energy, whereas vitamins,
minerals, and water perform numerous regulatory and structural functions.**
,4. What is the term for the process by which the body obtains nutrients from food
and uses them?
A) Nutrition
B) Hydration
C) Fermentation
D) Excretion
Correct Answer: A) Nutrition
Nutrition encompasses the processes through which organisms consume food, digest it,
absorb nutrients, transport them, metabolize them, and use them for energy, growth, repair,
and regulation.**
5. Which of the following factors has a major influence over a person's food choices?
A) Blood type
B) Birth order
C) Childhood experiences
D) Eye color
Correct Answer: C) Childhood experiences
Childhood experiences, including family meals, cultural traditions, and early exposure to
foods, have a major influence on food choices and preferences that persist into adulthood.**
, 6. Which statement best describes a calorie?
A) A type of vitamin
B) A unit used to measure energy
C) A type of mineral
D) A unit used exclusively to measure body weight
Correct Answer: B) A unit used to measure energy
In nutrition, the term calorie generally refers to a kilocalorie, which is a unit used to measure
the energy content of food and the energy expenditure of the body.**
7. A scientist discovers a chemical compound in certain rocks that she calls "stonia."
She cannot market extracts that contain stonia as a dietary supplement because:
A) It does not contain dietary ingredients
B) It is not FDA approved
C) It is a mineral, not a vitamin
D) It is too expensive to produce
Correct Answer: A) It does not contain dietary ingredients
To be marketed as a dietary supplement, a product must contain dietary ingredients such as
vitamins, minerals, herbs, amino acids, or other substances used to supplement the diet. A
compound from rocks that is not a recognized dietary ingredient cannot be marketed as a
supplement.**
& Answers with Rationales | A+
Guaranteed Pass
Section 1: Nutrition Fundamentals & Food Choices (Questions 1–35)
1. What is the primary purpose of nutrition science?
A) To eliminate all dietary fats
B) To study how nutrients and food components affect health and body function
C) To determine which foods taste best
D) To replace physical activity with dietary supplements
Correct Answer: B) To study how nutrients and food components affect health and
body function
Nutrition science examines how food, nutrients, and other dietary components interact with
the body. It includes digestion, absorption, metabolism, growth, disease prevention, and
overall health. Nutrition is much broader than simply determining which foods are healthy or
unhealthy.**
,2. Which of the following is considered an essential nutrient?
A) Alcohol
B) Dietary fiber only
C) Vitamin C
D) Caffeine
Correct Answer: C) Vitamin C
An essential nutrient is a substance the body cannot make in sufficient amounts and
therefore must obtain from the diet. Vitamins, minerals, certain amino acids, certain fatty
acids, and water are essential nutrients. Alcohol and caffeine are not essential nutrients.**
3. Which group contains the six major classes of nutrients?
A) Protein, sugar, starch, cholesterol, alcohol, and water
B) Carbohydrates, lipids, proteins, vitamins, minerals, and water
C) Vitamins, herbs, supplements, fiber, alcohol, and protein
D) Carbohydrates, enzymes, hormones, water, alcohol, and minerals
Correct Answer: B) Carbohydrates, lipids, proteins, vitamins, minerals, and water
The six recognized classes of nutrients are carbohydrates, lipids, proteins, vitamins,
minerals, and water. Carbohydrates, lipids, and proteins provide energy, whereas vitamins,
minerals, and water perform numerous regulatory and structural functions.**
,4. What is the term for the process by which the body obtains nutrients from food
and uses them?
A) Nutrition
B) Hydration
C) Fermentation
D) Excretion
Correct Answer: A) Nutrition
Nutrition encompasses the processes through which organisms consume food, digest it,
absorb nutrients, transport them, metabolize them, and use them for energy, growth, repair,
and regulation.**
5. Which of the following factors has a major influence over a person's food choices?
A) Blood type
B) Birth order
C) Childhood experiences
D) Eye color
Correct Answer: C) Childhood experiences
Childhood experiences, including family meals, cultural traditions, and early exposure to
foods, have a major influence on food choices and preferences that persist into adulthood.**
, 6. Which statement best describes a calorie?
A) A type of vitamin
B) A unit used to measure energy
C) A type of mineral
D) A unit used exclusively to measure body weight
Correct Answer: B) A unit used to measure energy
In nutrition, the term calorie generally refers to a kilocalorie, which is a unit used to measure
the energy content of food and the energy expenditure of the body.**
7. A scientist discovers a chemical compound in certain rocks that she calls "stonia."
She cannot market extracts that contain stonia as a dietary supplement because:
A) It does not contain dietary ingredients
B) It is not FDA approved
C) It is a mineral, not a vitamin
D) It is too expensive to produce
Correct Answer: A) It does not contain dietary ingredients
To be marketed as a dietary supplement, a product must contain dietary ingredients such as
vitamins, minerals, herbs, amino acids, or other substances used to supplement the diet. A
compound from rocks that is not a recognized dietary ingredient cannot be marketed as a
supplement.**
