DHN 101 Exam 1 Study Guide
Latest Practice Questions, Answers & Detailed Solutions
Comprehensive Exam Prep- 2026/2027
Graded A+
Welcome to the DHN 101 Practice Exam 1. This comprehensive test bank is designed to help
you master the foundational concepts of human nutrition. The exam covers key domains
including Macronutrients and Micronutrients, Energy Balance and Metabolism, Nutrition and
Chronic Disease, Food Science and Safety, and Dietary Guidelines and Assessment. Each
question is accompanied by a correct answer and a short rationale to facilitate effective
learning and self-assessment. Good luck!
1. Which of the following nutrients is a micronutrient?
• Magnesium
• Protein
• Fat
• Water
Answer: Magnesium
Rationale: Magnesium is a mineral required in small amounts (micronutrient), while protein,
fat, and water are macronutrients.
2. Which of the following lifestyle choices is the primary cause of preventable cancer
deaths in the United States?
• Eating fatty food
,• Consuming alcohol
• Smoking cigarettes
• Exercising infrequently
Answer: Smoking cigarettes
Rationale: Tobacco use, particularly smoking, is the single largest preventable cause of
cancer deaths in the U.S., responsible for about 30% of all cancer deaths.
3. Which of the following foods is both energy and nutrient dense?
• Strawberries
• Whole-grain bread
• Peanut butter
• Raw apple slices
Answer: Peanut Butter
Rationale: Peanut butter is high in calories (energy-dense) and rich in nutrients like healthy
fats, protein, and vitamins (nutrient-dense). The other options are lower in calorie density.
4. According to the U.S. Department of Agriculture, Americans consumed more ______ in
2010 than in 1970.
Answer: cheese
Rationale: USDA data shows a significant increase in cheese consumption per capita over
the last few decades, primarily due to its use in processed foods and pizzas.
5. A serving of food supplies 136 kcal from protein. Based on this information, how many
grams of protein are in the serving?
Answer: 34
,Rationale: Protein provides 4 kcal per gram. Therefore, 136 kcal / 4 kcal/g = 34 grams.
6. Maria limits her sodium intake to 2.3 g/day. This amount is equivalent to ______.
Answer: 2300 mg/day
Rationale: 1 gram (g) equals 1000 milligrams (mg). Therefore, 2.3 g is equal to 2.3 *
1000 = 2300 mg.
7. According to some nutrition scientists, selenium is a key beneficial nutrient.
Answer: False
Rationale: This statement is generally false. While selenium is an essential micronutrient, it
is not a "key beneficial nutrient" in a way that is unique compared to other trace minerals,
and it does not have a well-known role in preventing chronic diseases.
8. Archie weighs 72 kg, which is approximately ______ pounds.
Answer: 158
Rationale: To convert kilograms to pounds, multiply by 2.2046. 72 kg * 2.2046 ≈ 158.7,
which rounds to 158 pounds.
9. Which of the following is an organic compound?
• Water
• Salt
• Glucose
• Iron
Answer: Glucose
, Rationale: Organic compounds contain carbon-carbon bonds. Glucose (C6H12O6) is a
carbohydrate and contains carbon. Water, salt, and iron are inorganic.
10. Which of the following is classified as a disaccharide?
• Glucose
• Fructose
• Sucrose
• Starch
Answer: Sucrose
Rationale: Sucrose is a disaccharide composed of glucose and fructose. Glucose and
fructose are monosaccharides, and starch is a polysaccharide.
11. The main function of carbohydrates in the body is to:
• Build muscle tissue
• Provide energy
• Regulate body temperature
• Transport oxygen
Answer: Provide energy
Rationale: The primary role of carbohydrates is to supply glucose, which is used as an
energy source for the body's cells.
12. Which type of lipid is solid at room temperature?
• Unsaturated fat
• Polyunsaturated fat
Latest Practice Questions, Answers & Detailed Solutions
Comprehensive Exam Prep- 2026/2027
Graded A+
Welcome to the DHN 101 Practice Exam 1. This comprehensive test bank is designed to help
you master the foundational concepts of human nutrition. The exam covers key domains
including Macronutrients and Micronutrients, Energy Balance and Metabolism, Nutrition and
Chronic Disease, Food Science and Safety, and Dietary Guidelines and Assessment. Each
question is accompanied by a correct answer and a short rationale to facilitate effective
learning and self-assessment. Good luck!
1. Which of the following nutrients is a micronutrient?
• Magnesium
• Protein
• Fat
• Water
Answer: Magnesium
Rationale: Magnesium is a mineral required in small amounts (micronutrient), while protein,
fat, and water are macronutrients.
2. Which of the following lifestyle choices is the primary cause of preventable cancer
deaths in the United States?
• Eating fatty food
,• Consuming alcohol
• Smoking cigarettes
• Exercising infrequently
Answer: Smoking cigarettes
Rationale: Tobacco use, particularly smoking, is the single largest preventable cause of
cancer deaths in the U.S., responsible for about 30% of all cancer deaths.
3. Which of the following foods is both energy and nutrient dense?
• Strawberries
• Whole-grain bread
• Peanut butter
• Raw apple slices
Answer: Peanut Butter
Rationale: Peanut butter is high in calories (energy-dense) and rich in nutrients like healthy
fats, protein, and vitamins (nutrient-dense). The other options are lower in calorie density.
4. According to the U.S. Department of Agriculture, Americans consumed more ______ in
2010 than in 1970.
Answer: cheese
Rationale: USDA data shows a significant increase in cheese consumption per capita over
the last few decades, primarily due to its use in processed foods and pizzas.
5. A serving of food supplies 136 kcal from protein. Based on this information, how many
grams of protein are in the serving?
Answer: 34
,Rationale: Protein provides 4 kcal per gram. Therefore, 136 kcal / 4 kcal/g = 34 grams.
6. Maria limits her sodium intake to 2.3 g/day. This amount is equivalent to ______.
Answer: 2300 mg/day
Rationale: 1 gram (g) equals 1000 milligrams (mg). Therefore, 2.3 g is equal to 2.3 *
1000 = 2300 mg.
7. According to some nutrition scientists, selenium is a key beneficial nutrient.
Answer: False
Rationale: This statement is generally false. While selenium is an essential micronutrient, it
is not a "key beneficial nutrient" in a way that is unique compared to other trace minerals,
and it does not have a well-known role in preventing chronic diseases.
8. Archie weighs 72 kg, which is approximately ______ pounds.
Answer: 158
Rationale: To convert kilograms to pounds, multiply by 2.2046. 72 kg * 2.2046 ≈ 158.7,
which rounds to 158 pounds.
9. Which of the following is an organic compound?
• Water
• Salt
• Glucose
• Iron
Answer: Glucose
, Rationale: Organic compounds contain carbon-carbon bonds. Glucose (C6H12O6) is a
carbohydrate and contains carbon. Water, salt, and iron are inorganic.
10. Which of the following is classified as a disaccharide?
• Glucose
• Fructose
• Sucrose
• Starch
Answer: Sucrose
Rationale: Sucrose is a disaccharide composed of glucose and fructose. Glucose and
fructose are monosaccharides, and starch is a polysaccharide.
11. The main function of carbohydrates in the body is to:
• Build muscle tissue
• Provide energy
• Regulate body temperature
• Transport oxygen
Answer: Provide energy
Rationale: The primary role of carbohydrates is to supply glucose, which is used as an
energy source for the body's cells.
12. Which type of lipid is solid at room temperature?
• Unsaturated fat
• Polyunsaturated fat
