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ATI Nutrition Proctored Exam Practice Questions and
Answers with rationals updated version 2026/2027.
Section 1: Foundations of Nutrition (Macronutrients,
Micronutrients, and Digestion)
1. A nurse is teaching a client about macronutrients. Which of the
following statements by the client indicates an understanding of the
teaching?
A) "Fats provide 4 calories per gram."
B) "Carbohydrates are the body's primary energy source."
C) "Protein should make up the majority of my caloric intake."
D) "Vitamins are considered a macronutrient."
Answer: B) Carbohydrates are the body's primary energy source.
Rationale: Carbohydrates are the body's main source of energy,
providing 4 kcal/g. Fats provide 9 kcal/g, and proteins provide 4 kcal/g.
Macronutrients (carbs, fats, protein) are needed in large amounts, while
micronutrients (vitamins, minerals) are needed in trace amounts.
2. A client asks the nurse about increasing dietary fiber. The nurse
should explain that soluble fiber is particularly beneficial for which
of the following conditions?
A) Constipation
B) Hypercholesterolemia
C) Dehydration
D) Iron-deficiency anemia
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Answer: B) Hypercholesterolemia
Rationale: Soluble fiber (found in oats, barley, beans, apples) binds
with cholesterol in the digestive tract and helps excrete it, thereby
lowering LDL cholesterol levels. Insoluble fiber is more beneficial for
promoting bowel regularity and preventing constipation.
3. A nurse is educating a client about complete and incomplete
proteins. Which of the following foods should the nurse identify as a
complete protein?
A) Lentils
B) Peanut butter
C) Soybeans
D) Whole-wheat bread
Answer: C) Soybeans
Rationale: Complete proteins contain all nine essential amino acids and
are found in animal sources (meat, poultry, fish, eggs, dairy) and soy
products. Incomplete proteins lack one or more essential amino acids
and are typically plant-based.
4. A nurse is providing dietary teaching to a client who is a lacto-
vegetarian. Which of the following food selections by the client
demonstrates an understanding of this diet?
A) Scrambled eggs and spinach
B) Grilled salmon salad
C) Cheese omelet with mushrooms
D) Chicken stir-fry with rice
Answer: C) Cheese omelet with mushrooms
Rationale: A lacto-vegetarian diet includes dairy products (milk,
cheese, yogurt) and plant-based foods but excludes eggs, meat, poultry,
and fish. Therefore, a cheese omelet (containing dairy and vegetables)
would be appropriate.
5. The nurse is assessing a client who reports numbness and tingling
in the hands and feet. This finding is most consistent with a
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deficiency in which of the following vitamins?
A) Vitamin C
B) Vitamin B12
C) Vitamin A
D) Vitamin D
Answer: B) Vitamin B12
Rationale: Vitamin B12 deficiency can lead to neurological symptoms
such as paresthesia (numbness/tingling) in the extremities, as well as
weakness, ataxia, and cognitive changes. It is also associated with
pernicious anemia and macrocytic anemia.
6. A client is taking a thiazide diuretic for hypertension. The nurse
should instruct the client to increase intake of which of the following
nutrients?
A) Sodium
B) Calcium
C) Potassium
D) Iron
Answer: C) Potassium
Rationale: Thiazide diuretics are potassium-wasting, meaning they can
cause hypokalemia. Clients should be encouraged to eat potassium-rich
foods such as bananas, baked potatoes (with skin), tomatoes, oranges,
and spinach.
7. A nurse is teaching a client about iron absorption. Which of the
following foods should the nurse recommend to enhance the
absorption of non-heme iron?
A) A glass of milk
B) A cup of black tea
C) A glass of orange juice
D) A slice of cheese
Answer: C) A glass of orange juice
Rationale: Vitamin C (ascorbic acid) significantly enhances the
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absorption of non-heme iron (found in plant sources). Drinking orange
juice or consuming other vitamin C-rich foods with iron-rich meals is an
effective strategy to prevent or treat iron-deficiency anemia.
8. The nurse is evaluating the laboratory results of a client who is
malnourished. Which of the following findings is the best indicator
of protein status?
A) Hemoglobin
B) Serum albumin
C) Blood glucose
D) Serum potassium
Answer: B) Serum albumin
Rationale: Serum albumin is a protein synthesized by the liver and is a
key indicator of visceral protein status. Low albumin levels
(hypoalbuminemia) suggest protein malnutrition, though it can also be
affected by inflammation, liver disease, and fluid status. Prealbumin,
with its shorter half-life, is a more sensitive marker for recent changes in
protein intake.
9. A nurse is discussing fat-soluble vitamins with a client. Which of
the following vitamins should the nurse include in this discussion?
(Select all that apply.)
A) Vitamin A
B) Vitamin B6
C) Vitamin C
D) Vitamin D
E) Vitamin E
F) Vitamin K
Answer: A) Vitamin A, D) Vitamin D, E) Vitamin E, F) Vitamin K
Rationale: The fat-soluble vitamins are A, D, E, and K. They are
absorbed with dietary fat and stored in the body's fatty tissues and liver,
which can lead to toxicity if consumed in excess. Water-soluble vitamins
(B-complex and C) are generally not stored and are excreted in urine.
ATI Nutrition Proctored Exam Practice Questions and
Answers with rationals updated version 2026/2027.
Section 1: Foundations of Nutrition (Macronutrients,
Micronutrients, and Digestion)
1. A nurse is teaching a client about macronutrients. Which of the
following statements by the client indicates an understanding of the
teaching?
A) "Fats provide 4 calories per gram."
B) "Carbohydrates are the body's primary energy source."
C) "Protein should make up the majority of my caloric intake."
D) "Vitamins are considered a macronutrient."
Answer: B) Carbohydrates are the body's primary energy source.
Rationale: Carbohydrates are the body's main source of energy,
providing 4 kcal/g. Fats provide 9 kcal/g, and proteins provide 4 kcal/g.
Macronutrients (carbs, fats, protein) are needed in large amounts, while
micronutrients (vitamins, minerals) are needed in trace amounts.
2. A client asks the nurse about increasing dietary fiber. The nurse
should explain that soluble fiber is particularly beneficial for which
of the following conditions?
A) Constipation
B) Hypercholesterolemia
C) Dehydration
D) Iron-deficiency anemia
,2|Page
Answer: B) Hypercholesterolemia
Rationale: Soluble fiber (found in oats, barley, beans, apples) binds
with cholesterol in the digestive tract and helps excrete it, thereby
lowering LDL cholesterol levels. Insoluble fiber is more beneficial for
promoting bowel regularity and preventing constipation.
3. A nurse is educating a client about complete and incomplete
proteins. Which of the following foods should the nurse identify as a
complete protein?
A) Lentils
B) Peanut butter
C) Soybeans
D) Whole-wheat bread
Answer: C) Soybeans
Rationale: Complete proteins contain all nine essential amino acids and
are found in animal sources (meat, poultry, fish, eggs, dairy) and soy
products. Incomplete proteins lack one or more essential amino acids
and are typically plant-based.
4. A nurse is providing dietary teaching to a client who is a lacto-
vegetarian. Which of the following food selections by the client
demonstrates an understanding of this diet?
A) Scrambled eggs and spinach
B) Grilled salmon salad
C) Cheese omelet with mushrooms
D) Chicken stir-fry with rice
Answer: C) Cheese omelet with mushrooms
Rationale: A lacto-vegetarian diet includes dairy products (milk,
cheese, yogurt) and plant-based foods but excludes eggs, meat, poultry,
and fish. Therefore, a cheese omelet (containing dairy and vegetables)
would be appropriate.
5. The nurse is assessing a client who reports numbness and tingling
in the hands and feet. This finding is most consistent with a
,3|Page
deficiency in which of the following vitamins?
A) Vitamin C
B) Vitamin B12
C) Vitamin A
D) Vitamin D
Answer: B) Vitamin B12
Rationale: Vitamin B12 deficiency can lead to neurological symptoms
such as paresthesia (numbness/tingling) in the extremities, as well as
weakness, ataxia, and cognitive changes. It is also associated with
pernicious anemia and macrocytic anemia.
6. A client is taking a thiazide diuretic for hypertension. The nurse
should instruct the client to increase intake of which of the following
nutrients?
A) Sodium
B) Calcium
C) Potassium
D) Iron
Answer: C) Potassium
Rationale: Thiazide diuretics are potassium-wasting, meaning they can
cause hypokalemia. Clients should be encouraged to eat potassium-rich
foods such as bananas, baked potatoes (with skin), tomatoes, oranges,
and spinach.
7. A nurse is teaching a client about iron absorption. Which of the
following foods should the nurse recommend to enhance the
absorption of non-heme iron?
A) A glass of milk
B) A cup of black tea
C) A glass of orange juice
D) A slice of cheese
Answer: C) A glass of orange juice
Rationale: Vitamin C (ascorbic acid) significantly enhances the
, 4|Page
absorption of non-heme iron (found in plant sources). Drinking orange
juice or consuming other vitamin C-rich foods with iron-rich meals is an
effective strategy to prevent or treat iron-deficiency anemia.
8. The nurse is evaluating the laboratory results of a client who is
malnourished. Which of the following findings is the best indicator
of protein status?
A) Hemoglobin
B) Serum albumin
C) Blood glucose
D) Serum potassium
Answer: B) Serum albumin
Rationale: Serum albumin is a protein synthesized by the liver and is a
key indicator of visceral protein status. Low albumin levels
(hypoalbuminemia) suggest protein malnutrition, though it can also be
affected by inflammation, liver disease, and fluid status. Prealbumin,
with its shorter half-life, is a more sensitive marker for recent changes in
protein intake.
9. A nurse is discussing fat-soluble vitamins with a client. Which of
the following vitamins should the nurse include in this discussion?
(Select all that apply.)
A) Vitamin A
B) Vitamin B6
C) Vitamin C
D) Vitamin D
E) Vitamin E
F) Vitamin K
Answer: A) Vitamin A, D) Vitamin D, E) Vitamin E, F) Vitamin K
Rationale: The fat-soluble vitamins are A, D, E, and K. They are
absorbed with dietary fat and stored in the body's fatty tissues and liver,
which can lead to toxicity if consumed in excess. Water-soluble vitamins
(B-complex and C) are generally not stored and are excreted in urine.
