ATI NUTRITION PROCTORED EXAM 2026/2027 – EXAM
QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALE | 2027 Q&A | INSTANT
DOWNLOAD PDF
1. A nurse is teaching a client about the primary function of carbohydrates in the
diet. Which statement by the client indicates an accurate understanding?
A. Carbohydrates are primarily used to build antibodies.
B. Carbohydrates provide the body's main source of energy.
C. Carbohydrates are required to transport oxygen in the blood.
D. Carbohydrates are primarily responsible for maintaining bone density.
Rationale: Carbohydrates are the body's preferred and primary energy source, particularly for
the brain and nervous system. Proteins have major structural and regulatory roles, iron supports
oxygen transport, and minerals such as calcium contribute to bone health.
2. Which nutrient provides the greatest amount of energy per gram?
A. Carbohydrate
B. Protein
C. Water
D. Fat
Rationale: Fat provides approximately 9 kcal/g, whereas carbohydrates and protein provide
approximately 4 kcal/g. Water provides no calories.
3. A nurse is reviewing the functions of protein with a client. Which function should
the nurse identify as a major role of dietary protein?
A. Supporting tissue growth and repair
B. Providing the body's primary source of hydration
C. Serving as the principal source of dietary fiber
D. Maintaining blood glucose as the only energy substrate
,Rationale: Protein supplies amino acids needed for tissue growth, maintenance, and repair and
is also involved in enzymes, hormones, antibodies, and other body structures. Water and fiber
have different primary functions.
4. A client asks why dietary fiber is important. Which response by the nurse is
appropriate?
A. “It is the body's preferred source of amino acids.”
B. “It provides more calories than dietary fat.”
C. “It prevents all forms of gastrointestinal disease.”
D. “It supports normal bowel function and can contribute to cardiovascular health.”
Rationale: Dietary fiber promotes bowel regularity and certain types of fiber can help improve
cholesterol levels and support cardiovascular health. Fiber is not a source of amino acids and
does not prevent all gastrointestinal disease.
5. A nurse is assessing a client's dietary intake. Which food is a significant source of
complete protein?
A. Apple
B. Eggs
C. Olive oil
D. White rice
Rationale: Eggs contain all nine essential amino acids in adequate proportions and are
considered a complete protein source. Fruits, oils, and many grains do not provide complete
protein in the same way.
6. Which food choice is highest in dietary fiber?
A. Cheddar cheese
B. Chicken breast
C. Lentils
D. Butter
,Rationale: Lentils are legumes and provide substantial amounts of dietary fiber. Animal
products such as chicken and cheese contain little or no dietary fiber, while butter contains no
fiber.
7. A nurse is discussing water-soluble vitamins with a client. Which vitamins should
the nurse identify as water-soluble?
A. Vitamins A and D
B. Vitamins A and E
C. Vitamins D and K
D. Vitamins B-complex and C
Rationale: The B-complex vitamins and vitamin C are water-soluble. Vitamins A, D, E, and K
are fat-soluble and can accumulate in body tissues.
8. A client asks why excessive intake of fat-soluble vitamins can be harmful. Which
explanation is most appropriate?
A. They can accumulate in body tissues and cause toxicity.
B. They are rapidly excreted through the kidneys.
C. They cannot be absorbed from the gastrointestinal tract.
D. They are converted directly into dietary fiber.
Rationale: Fat-soluble vitamins are stored in the liver and adipose tissue, so excessive
supplementation can result in accumulation and toxicity. Water-soluble vitamins are generally
more readily excreted in urine.
9. Which vitamin is particularly important for calcium absorption and bone health?
A. Vitamin C
B. Vitamin B12
C. Vitamin D
D. Vitamin B6
Rationale: Vitamin D promotes intestinal calcium absorption and plays an important role in
maintaining bone mineralization. Vitamins C and B-complex vitamins have other major
physiological functions.
, 10. A nurse is teaching a client about vitamin C. Which food is an appropriate dietary
source?
A. Butter
B. Beef
C. Eggs
D. Oranges
Rationale: Citrus fruits such as oranges are rich sources of vitamin C. Vitamin C is important
for collagen formation, wound healing, and immune function.
11. A client is at risk for iron-deficiency anemia. Which food would be an appropriate
recommendation as a source of dietary iron?
A. Lean beef
B. Applesauce
C. White bread
D. Cucumber
Rationale: Lean red meat provides heme iron, which is generally absorbed more efficiently than
nonheme iron from plant foods. Iron is required for hemoglobin production.
12. Which mineral is most directly associated with hemoglobin formation and oxygen
transport?
A. Calcium
B. Sodium
C. Iron
D. Potassium
Rationale: Iron is a component of hemoglobin and is essential for oxygen transport. Calcium is
important for bones and muscle function, while sodium and potassium are major electrolytes.
13. A nurse is teaching a client about calcium-rich foods. Which selection
demonstrates appropriate understanding?
A. White rice and apples
QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALE | 2027 Q&A | INSTANT
DOWNLOAD PDF
1. A nurse is teaching a client about the primary function of carbohydrates in the
diet. Which statement by the client indicates an accurate understanding?
A. Carbohydrates are primarily used to build antibodies.
B. Carbohydrates provide the body's main source of energy.
C. Carbohydrates are required to transport oxygen in the blood.
D. Carbohydrates are primarily responsible for maintaining bone density.
Rationale: Carbohydrates are the body's preferred and primary energy source, particularly for
the brain and nervous system. Proteins have major structural and regulatory roles, iron supports
oxygen transport, and minerals such as calcium contribute to bone health.
2. Which nutrient provides the greatest amount of energy per gram?
A. Carbohydrate
B. Protein
C. Water
D. Fat
Rationale: Fat provides approximately 9 kcal/g, whereas carbohydrates and protein provide
approximately 4 kcal/g. Water provides no calories.
3. A nurse is reviewing the functions of protein with a client. Which function should
the nurse identify as a major role of dietary protein?
A. Supporting tissue growth and repair
B. Providing the body's primary source of hydration
C. Serving as the principal source of dietary fiber
D. Maintaining blood glucose as the only energy substrate
,Rationale: Protein supplies amino acids needed for tissue growth, maintenance, and repair and
is also involved in enzymes, hormones, antibodies, and other body structures. Water and fiber
have different primary functions.
4. A client asks why dietary fiber is important. Which response by the nurse is
appropriate?
A. “It is the body's preferred source of amino acids.”
B. “It provides more calories than dietary fat.”
C. “It prevents all forms of gastrointestinal disease.”
D. “It supports normal bowel function and can contribute to cardiovascular health.”
Rationale: Dietary fiber promotes bowel regularity and certain types of fiber can help improve
cholesterol levels and support cardiovascular health. Fiber is not a source of amino acids and
does not prevent all gastrointestinal disease.
5. A nurse is assessing a client's dietary intake. Which food is a significant source of
complete protein?
A. Apple
B. Eggs
C. Olive oil
D. White rice
Rationale: Eggs contain all nine essential amino acids in adequate proportions and are
considered a complete protein source. Fruits, oils, and many grains do not provide complete
protein in the same way.
6. Which food choice is highest in dietary fiber?
A. Cheddar cheese
B. Chicken breast
C. Lentils
D. Butter
,Rationale: Lentils are legumes and provide substantial amounts of dietary fiber. Animal
products such as chicken and cheese contain little or no dietary fiber, while butter contains no
fiber.
7. A nurse is discussing water-soluble vitamins with a client. Which vitamins should
the nurse identify as water-soluble?
A. Vitamins A and D
B. Vitamins A and E
C. Vitamins D and K
D. Vitamins B-complex and C
Rationale: The B-complex vitamins and vitamin C are water-soluble. Vitamins A, D, E, and K
are fat-soluble and can accumulate in body tissues.
8. A client asks why excessive intake of fat-soluble vitamins can be harmful. Which
explanation is most appropriate?
A. They can accumulate in body tissues and cause toxicity.
B. They are rapidly excreted through the kidneys.
C. They cannot be absorbed from the gastrointestinal tract.
D. They are converted directly into dietary fiber.
Rationale: Fat-soluble vitamins are stored in the liver and adipose tissue, so excessive
supplementation can result in accumulation and toxicity. Water-soluble vitamins are generally
more readily excreted in urine.
9. Which vitamin is particularly important for calcium absorption and bone health?
A. Vitamin C
B. Vitamin B12
C. Vitamin D
D. Vitamin B6
Rationale: Vitamin D promotes intestinal calcium absorption and plays an important role in
maintaining bone mineralization. Vitamins C and B-complex vitamins have other major
physiological functions.
, 10. A nurse is teaching a client about vitamin C. Which food is an appropriate dietary
source?
A. Butter
B. Beef
C. Eggs
D. Oranges
Rationale: Citrus fruits such as oranges are rich sources of vitamin C. Vitamin C is important
for collagen formation, wound healing, and immune function.
11. A client is at risk for iron-deficiency anemia. Which food would be an appropriate
recommendation as a source of dietary iron?
A. Lean beef
B. Applesauce
C. White bread
D. Cucumber
Rationale: Lean red meat provides heme iron, which is generally absorbed more efficiently than
nonheme iron from plant foods. Iron is required for hemoglobin production.
12. Which mineral is most directly associated with hemoglobin formation and oxygen
transport?
A. Calcium
B. Sodium
C. Iron
D. Potassium
Rationale: Iron is a component of hemoglobin and is essential for oxygen transport. Calcium is
important for bones and muscle function, while sodium and potassium are major electrolytes.
13. A nurse is teaching a client about calcium-rich foods. Which selection
demonstrates appropriate understanding?
A. White rice and apples
