ATI Nutrition Proctored-Style Exam
2026/2027: Comprehensive 200+ Original
Practice Questions with Correct Answers,
Detailed Rationales, Clinical Scenarios,
Therapeutic Diets, Nutrition Across the
Lifespan, and Exam-Focused Review for
Nursing Students
Questions 1–25: Basic Nutrition
1. A nurse is teaching a client about carbohydrates. Which statement should
the nurse include?
A. Carbohydrates are the body's primary source of energy.
B. Carbohydrates are needed only for muscle development.
C. Carbohydrates provide more calories per gram than fat.
D. Carbohydrates cannot be stored in the body.
Answer: A
Rationale: Carbohydrates provide approximately 4 kcal/g and are the body's
preferred energy source, particularly for the brain and red blood cells.
2. Which nutrient provides the greatest number of calories per gram?
A. Protein
B. Carbohydrate
C. Fat
D. Water
Answer: C
Rationale: Fat provides approximately 9 kcal/g, compared with 4 kcal/g for
carbohydrate and protein.
,3. Which food is highest in complete protein?
A. White rice
B. Eggs
C. Apples
D. Olive oil
Answer: B
Rationale: Eggs contain all nine essential amino acids and are considered a
complete protein.
4. A client asks why dietary fiber is important. Which response is
appropriate?
A. "It provides concentrated calories."
B. "It promotes normal bowel function."
C. "It replaces the need for water."
D. "It prevents all gastrointestinal disorders."
Answer: B
Rationale: Dietary fiber promotes bowel regularity and can help prevent
constipation.
5. Which nutrient is essential for tissue growth and repair?
A. Protein
B. Water
C. Sodium
D. Vitamin D
Answer: A
Rationale: Protein supplies amino acids required for tissue synthesis, maintenance,
enzymes, hormones, and immune function.
6. Which food is a good source of soluble fiber?
A. Oatmeal
B. Chicken breast
C. Egg whites
D. Cheese
Answer: A
Rationale: Oats contain soluble fiber, which can help lower blood cholesterol.
,7. Which nutrient is primarily responsible for maintaining fluid balance?
A. Vitamin C
B. Water
C. Protein
D. Iron
Answer: B
Rationale: Water is essential for fluid balance, temperature regulation, transport,
and metabolic reactions.
8. A nurse explains that vitamins are classified as fat-soluble or water-soluble.
Which vitamin is fat-soluble?
A. Vitamin C
B. Vitamin B1
C. Vitamin A
D. Vitamin B12
Answer: C
Rationale: Vitamins A, D, E, and K are fat-soluble and can accumulate in body
tissues.
9. Which vitamins are water-soluble?
A. A and D
B. D and E
C. B-complex and C
D. A and K
Answer: C
Rationale: The B-complex vitamins and vitamin C are water-soluble.
10. Which mineral is most closely associated with oxygen transport?
A. Calcium
B. Iron
C. Sodium
D. Potassium
Answer: B
Rationale: Iron is a component of hemoglobin and is necessary for oxygen
transport.
, 11. Which food provides a significant amount of calcium?
A. Milk
B. Apples
C. White rice
D. Vegetable oil
Answer: A
Rationale: Milk and other dairy products are major dietary sources of calcium.
12. A nurse is teaching about vitamin C. Which food is an excellent source?
A. Orange
B. Beef
C. Butter
D. White bread
Answer: A
Rationale: Citrus fruits such as oranges are rich sources of vitamin C.
13. Which vitamin is important for blood clotting?
A. Vitamin A
B. Vitamin C
C. Vitamin K
D. Vitamin B1
Answer: C
Rationale: Vitamin K is required for synthesis of several clotting factors.
14. Which mineral is particularly important for bone mineralization?
A. Calcium
B. Sodium
C. Chloride
D. Potassium
Answer: A
Rationale: Calcium is a major structural component of bones and teeth.
15. Which food contains primarily unsaturated fat?
A. Olive oil
B. Butter
C. Bacon fat
D. Lard
2026/2027: Comprehensive 200+ Original
Practice Questions with Correct Answers,
Detailed Rationales, Clinical Scenarios,
Therapeutic Diets, Nutrition Across the
Lifespan, and Exam-Focused Review for
Nursing Students
Questions 1–25: Basic Nutrition
1. A nurse is teaching a client about carbohydrates. Which statement should
the nurse include?
A. Carbohydrates are the body's primary source of energy.
B. Carbohydrates are needed only for muscle development.
C. Carbohydrates provide more calories per gram than fat.
D. Carbohydrates cannot be stored in the body.
Answer: A
Rationale: Carbohydrates provide approximately 4 kcal/g and are the body's
preferred energy source, particularly for the brain and red blood cells.
2. Which nutrient provides the greatest number of calories per gram?
A. Protein
B. Carbohydrate
C. Fat
D. Water
Answer: C
Rationale: Fat provides approximately 9 kcal/g, compared with 4 kcal/g for
carbohydrate and protein.
,3. Which food is highest in complete protein?
A. White rice
B. Eggs
C. Apples
D. Olive oil
Answer: B
Rationale: Eggs contain all nine essential amino acids and are considered a
complete protein.
4. A client asks why dietary fiber is important. Which response is
appropriate?
A. "It provides concentrated calories."
B. "It promotes normal bowel function."
C. "It replaces the need for water."
D. "It prevents all gastrointestinal disorders."
Answer: B
Rationale: Dietary fiber promotes bowel regularity and can help prevent
constipation.
5. Which nutrient is essential for tissue growth and repair?
A. Protein
B. Water
C. Sodium
D. Vitamin D
Answer: A
Rationale: Protein supplies amino acids required for tissue synthesis, maintenance,
enzymes, hormones, and immune function.
6. Which food is a good source of soluble fiber?
A. Oatmeal
B. Chicken breast
C. Egg whites
D. Cheese
Answer: A
Rationale: Oats contain soluble fiber, which can help lower blood cholesterol.
,7. Which nutrient is primarily responsible for maintaining fluid balance?
A. Vitamin C
B. Water
C. Protein
D. Iron
Answer: B
Rationale: Water is essential for fluid balance, temperature regulation, transport,
and metabolic reactions.
8. A nurse explains that vitamins are classified as fat-soluble or water-soluble.
Which vitamin is fat-soluble?
A. Vitamin C
B. Vitamin B1
C. Vitamin A
D. Vitamin B12
Answer: C
Rationale: Vitamins A, D, E, and K are fat-soluble and can accumulate in body
tissues.
9. Which vitamins are water-soluble?
A. A and D
B. D and E
C. B-complex and C
D. A and K
Answer: C
Rationale: The B-complex vitamins and vitamin C are water-soluble.
10. Which mineral is most closely associated with oxygen transport?
A. Calcium
B. Iron
C. Sodium
D. Potassium
Answer: B
Rationale: Iron is a component of hemoglobin and is necessary for oxygen
transport.
, 11. Which food provides a significant amount of calcium?
A. Milk
B. Apples
C. White rice
D. Vegetable oil
Answer: A
Rationale: Milk and other dairy products are major dietary sources of calcium.
12. A nurse is teaching about vitamin C. Which food is an excellent source?
A. Orange
B. Beef
C. Butter
D. White bread
Answer: A
Rationale: Citrus fruits such as oranges are rich sources of vitamin C.
13. Which vitamin is important for blood clotting?
A. Vitamin A
B. Vitamin C
C. Vitamin K
D. Vitamin B1
Answer: C
Rationale: Vitamin K is required for synthesis of several clotting factors.
14. Which mineral is particularly important for bone mineralization?
A. Calcium
B. Sodium
C. Chloride
D. Potassium
Answer: A
Rationale: Calcium is a major structural component of bones and teeth.
15. Which food contains primarily unsaturated fat?
A. Olive oil
B. Butter
C. Bacon fat
D. Lard
