DHN 101 Exam 1 Actual Exam Questions
And Answers Practice Questions with
Solutions Newest | Already Graded A+
2026 update
1. Which of the following is the primary function of carbohydrates in the human
body?
A. Hormone production
B. Energy provision
C. Tissue repair
D. Enzyme synthesis
Answer: B
Rationale: Carbohydrates are the body's main source of energy, especially for the
brain and muscles.
2. A patient with lactose intolerance should avoid which food?
A. Apples
B. Cheese
C. Rice
D. Chicken
Answer: B
Rationale: Lactose intolerance involves inability to digest lactose, found in dairy
products like cheese.
3. Which vitamin is fat-soluble?
A. Vitamin C
,B. Vitamin B12
C. Vitamin D
D. Vitamin B6
Answer: C
Rationale: Fat-soluble vitamins include A, D, E, and K; Vitamin D is stored in body
fat.
4. What is the recommended macronutrient distribution range (AMDR) for
protein?
A. 5–10%
B. 10–35%
C. 40–60%
D. 70–80%
Answer: B
Rationale: The AMDR for protein is 10–35% of total daily calories.
5. Which mineral is essential for oxygen transport in blood?
A. Calcium
B. Potassium
C. Iron
D. Sodium
Answer: C
Rationale: Iron is a key component of hemoglobin, responsible for oxygen
transport.
6. A deficiency in Vitamin C can lead to:
A. Rickets
B. Scurvy
,C. Anemia
D. Osteoporosis
Answer: B
Rationale: Vitamin C deficiency causes scurvy, characterized by bleeding gums
and poor wound healing.
7. Which nutrient provides 9 kcal per gram?
A. Protein
B. Carbohydrate
C. Fat
D. Fiber
Answer: C
Rationale: Fat is energy-dense, providing 9 kcal/g, more than other
macronutrients.
8. What is the main function of dietary fiber?
A. Provide calories
B. Improve digestion
C. Build muscle
D. Store energy
Answer: B
Rationale: Dietary fiber supports digestive health and prevents constipation.
9. Which organ is primarily responsible for nutrient absorption?
A. Stomach
B. Liver
C. Small intestine
D. Large intestine
, Answer: C
Rationale: The small intestine is the main site of nutrient absorption.
10. Which of the following is a complete protein source?
A. Rice
B. Beans
C. Eggs
D. Corn
Answer: C
Rationale: Complete proteins like eggs contain all essential amino acids.
11. A high sodium intake is most closely associated with:
A. Diabetes
B. Hypertension
C. Osteoporosis
D. Anemia
Answer: B
Rationale: Excess sodium contributes to high blood pressure (hypertension).
12. Which vitamin is important for blood clotting?
A. Vitamin A
B. Vitamin K
C. Vitamin C
D. Vitamin B1
Answer: B
Rationale: Vitamin K plays a critical role in blood clotting mechanisms.
And Answers Practice Questions with
Solutions Newest | Already Graded A+
2026 update
1. Which of the following is the primary function of carbohydrates in the human
body?
A. Hormone production
B. Energy provision
C. Tissue repair
D. Enzyme synthesis
Answer: B
Rationale: Carbohydrates are the body's main source of energy, especially for the
brain and muscles.
2. A patient with lactose intolerance should avoid which food?
A. Apples
B. Cheese
C. Rice
D. Chicken
Answer: B
Rationale: Lactose intolerance involves inability to digest lactose, found in dairy
products like cheese.
3. Which vitamin is fat-soluble?
A. Vitamin C
,B. Vitamin B12
C. Vitamin D
D. Vitamin B6
Answer: C
Rationale: Fat-soluble vitamins include A, D, E, and K; Vitamin D is stored in body
fat.
4. What is the recommended macronutrient distribution range (AMDR) for
protein?
A. 5–10%
B. 10–35%
C. 40–60%
D. 70–80%
Answer: B
Rationale: The AMDR for protein is 10–35% of total daily calories.
5. Which mineral is essential for oxygen transport in blood?
A. Calcium
B. Potassium
C. Iron
D. Sodium
Answer: C
Rationale: Iron is a key component of hemoglobin, responsible for oxygen
transport.
6. A deficiency in Vitamin C can lead to:
A. Rickets
B. Scurvy
,C. Anemia
D. Osteoporosis
Answer: B
Rationale: Vitamin C deficiency causes scurvy, characterized by bleeding gums
and poor wound healing.
7. Which nutrient provides 9 kcal per gram?
A. Protein
B. Carbohydrate
C. Fat
D. Fiber
Answer: C
Rationale: Fat is energy-dense, providing 9 kcal/g, more than other
macronutrients.
8. What is the main function of dietary fiber?
A. Provide calories
B. Improve digestion
C. Build muscle
D. Store energy
Answer: B
Rationale: Dietary fiber supports digestive health and prevents constipation.
9. Which organ is primarily responsible for nutrient absorption?
A. Stomach
B. Liver
C. Small intestine
D. Large intestine
, Answer: C
Rationale: The small intestine is the main site of nutrient absorption.
10. Which of the following is a complete protein source?
A. Rice
B. Beans
C. Eggs
D. Corn
Answer: C
Rationale: Complete proteins like eggs contain all essential amino acids.
11. A high sodium intake is most closely associated with:
A. Diabetes
B. Hypertension
C. Osteoporosis
D. Anemia
Answer: B
Rationale: Excess sodium contributes to high blood pressure (hypertension).
12. Which vitamin is important for blood clotting?
A. Vitamin A
B. Vitamin K
C. Vitamin C
D. Vitamin B1
Answer: B
Rationale: Vitamin K plays a critical role in blood clotting mechanisms.
