The Ultimate ATI Nutrition Proctored Exam
Preparation Guide (2026/2027 Edition): A
Comprehensive Compendium of 200 Evidence-
Based Practice Questions with In-Depth Clinical
Rationales Covering Macronutrient Metabolism,
Micronutrient Deficiencies, Therapeutic Diets,
Enteral/Parenteral Nutrition, and Lifespan
Nutritional Care.
SECTION 1: BASIC NUTRITION & MACRONUTRIENTS
(Questions 1–25)
1. A nurse is teaching a client about the functions of carbohydrates. Which
statement by the client indicates understanding?
A. "Carbohydrates are primarily used for tissue repair."
B. "Carbohydrates provide the body's main source of energy."
C. "Carbohydrates help regulate body temperature."
D. "Carbohydrates are stored as adipose tissue only."
Correct Answer: B
Rationale: Carbohydrates are the body's preferred energy source. They are broken down
into glucose, which fuels cells. Protein is primarily for tissue repair, and fat is for energy
storage.
,2. A client asks which type of fat is considered most heart-healthy. Which response
should the nurse provide?
A. Saturated fats
B. Trans fats
C. Unsaturated fats (monounsaturated and polyunsaturated)
D. Hydrogenated oils
Correct Answer: C
Rationale: Unsaturated fats (found in olive oil, avocado, nuts, and fatty fish) improve
cholesterol levels and reduce heart disease risk. Saturated and trans fats raise LDL (bad)
cholesterol.
3. A nurse is teaching about complete proteins. Which food source contains a
complete protein?
A. Beans
B. Eggs
C. Rice
D. Pasta
Correct Answer: B
Rationale: Complete proteins contain all nine essential amino acids. Animal sources
(eggs, meat, fish, dairy, poultry) are complete proteins. Most plant proteins (beans, rice,
pasta) are incomplete.
,4. Which macronutrient provides the most energy per gram?
A. Carbohydrates – 4 kcal/g
B. Protein – 4 kcal/g
C. Fats – 9 kcal/g
D. Alcohol – 7 kcal/g
Correct Answer: C
Rationale: Fats provide 9 kcal/g, the highest among macronutrients. Carbohydrates and
protein provide 4 kcal/g each. While alcohol provides 7 kcal/g, it is not considered a
nutrient.
5. A nurse is educating a client about the primary function of carbohydrates.
Which statement by the client indicates understanding?
A. "Carbohydrates help build muscle tissue."
B. "Carbohydrates provide the main source of energy for the body."
C. "Carbohydrates are stored as fat immediately."
D. "Carbohydrates are only needed for brain function."
Correct Answer: B
Rationale: Carbohydrates provide the main source of energy for the body. They are
converted to glucose, which fuels cellular activity.
, 6. A nurse is calculating the recommended daily fiber intake for an adult female.
Which amount is appropriate?
A. 15 g/day
B. 25 g/day
C. 38 g/day
D. 50 g/day
Correct Answer: B
Rationale: The recommended daily fiber intake is 25 g/day for adult females and 38
g/day for adult males.
7. A client asks which vitamin is fat-soluble. Which response is correct?
A. Vitamin C
B. Vitamin D
C. Thiamine (B1)
D. Riboflavin (B2)
Correct Answer: B
Rationale: Fat-soluble vitamins include vitamins A, D, E, and K. Vitamin C and the B-
complex vitamins (thiamine, riboflavin) are water-soluble.
8. A nurse is teaching a client about the difference between simple and complex
carbohydrates. Which food should the nurse identify as a complex carbohydrate?
Preparation Guide (2026/2027 Edition): A
Comprehensive Compendium of 200 Evidence-
Based Practice Questions with In-Depth Clinical
Rationales Covering Macronutrient Metabolism,
Micronutrient Deficiencies, Therapeutic Diets,
Enteral/Parenteral Nutrition, and Lifespan
Nutritional Care.
SECTION 1: BASIC NUTRITION & MACRONUTRIENTS
(Questions 1–25)
1. A nurse is teaching a client about the functions of carbohydrates. Which
statement by the client indicates understanding?
A. "Carbohydrates are primarily used for tissue repair."
B. "Carbohydrates provide the body's main source of energy."
C. "Carbohydrates help regulate body temperature."
D. "Carbohydrates are stored as adipose tissue only."
Correct Answer: B
Rationale: Carbohydrates are the body's preferred energy source. They are broken down
into glucose, which fuels cells. Protein is primarily for tissue repair, and fat is for energy
storage.
,2. A client asks which type of fat is considered most heart-healthy. Which response
should the nurse provide?
A. Saturated fats
B. Trans fats
C. Unsaturated fats (monounsaturated and polyunsaturated)
D. Hydrogenated oils
Correct Answer: C
Rationale: Unsaturated fats (found in olive oil, avocado, nuts, and fatty fish) improve
cholesterol levels and reduce heart disease risk. Saturated and trans fats raise LDL (bad)
cholesterol.
3. A nurse is teaching about complete proteins. Which food source contains a
complete protein?
A. Beans
B. Eggs
C. Rice
D. Pasta
Correct Answer: B
Rationale: Complete proteins contain all nine essential amino acids. Animal sources
(eggs, meat, fish, dairy, poultry) are complete proteins. Most plant proteins (beans, rice,
pasta) are incomplete.
,4. Which macronutrient provides the most energy per gram?
A. Carbohydrates – 4 kcal/g
B. Protein – 4 kcal/g
C. Fats – 9 kcal/g
D. Alcohol – 7 kcal/g
Correct Answer: C
Rationale: Fats provide 9 kcal/g, the highest among macronutrients. Carbohydrates and
protein provide 4 kcal/g each. While alcohol provides 7 kcal/g, it is not considered a
nutrient.
5. A nurse is educating a client about the primary function of carbohydrates.
Which statement by the client indicates understanding?
A. "Carbohydrates help build muscle tissue."
B. "Carbohydrates provide the main source of energy for the body."
C. "Carbohydrates are stored as fat immediately."
D. "Carbohydrates are only needed for brain function."
Correct Answer: B
Rationale: Carbohydrates provide the main source of energy for the body. They are
converted to glucose, which fuels cellular activity.
, 6. A nurse is calculating the recommended daily fiber intake for an adult female.
Which amount is appropriate?
A. 15 g/day
B. 25 g/day
C. 38 g/day
D. 50 g/day
Correct Answer: B
Rationale: The recommended daily fiber intake is 25 g/day for adult females and 38
g/day for adult males.
7. A client asks which vitamin is fat-soluble. Which response is correct?
A. Vitamin C
B. Vitamin D
C. Thiamine (B1)
D. Riboflavin (B2)
Correct Answer: B
Rationale: Fat-soluble vitamins include vitamins A, D, E, and K. Vitamin C and the B-
complex vitamins (thiamine, riboflavin) are water-soluble.
8. A nurse is teaching a client about the difference between simple and complex
carbohydrates. Which food should the nurse identify as a complex carbohydrate?
