Fall Semester 2025 – December HESI Nutrition
Complete Study Guide | High-Yield Nutrition
Concepts, Dietary Guidelines, Macronutrients &
Micronutrients, Patient Care Applications, 200+
HESI-Style Questions with Rationales & Exam-
Focused Preparation for Nursing Students
Question 1:
Which macronutrient is the primary source of energy for the body?
A) Protein
B) Carbohydrates
C) Fats
D) Vitamins
CORRECT ANSWER: B) Carbohydrates
Rationale: Carbohydrates are the body's main source of energy, particularly during
high-intensity exercise. They are broken down into glucose, which is used for fuel.
Question 2:
Which vitamin is essential for the absorption of calcium?
A) Vitamin A
B) Vitamin C
C) Vitamin D
D) Vitamin E
CORRECT ANSWER: C) Vitamin D
Rationale: Vitamin D plays a crucial role in calcium absorption in the gut, helping to
maintain bone health and prevent osteoporosis.
Question 3:
What is the recommended daily intake of fiber for adults?
A) 5-10 grams
B) 20-30 grams
C) 35-50 grams
D) 15-20 grams
CORRECT ANSWER: B) 20-30 grams
Rationale: The recommended daily intake of dietary fiber for adults is 20-30 grams.
Adequate fiber intake is important for digestive health and can help prevent certain
diseases.
,Question 4:
Which of the following is a complete protein?
A) Rice
B) Beans
C) Quinoa
D) Corn
CORRECT ANSWER: C) Quinoa
Rationale: Quinoa is considered a complete protein because it contains all nine
essential amino acids, making it a valuable source of protein, especially for vegetarians
and vegans.
Question 5:
What is the primary function of dietary fat?
A) Energy storage
B) Muscle repair
C) Water regulation
D) Immune support
CORRECT ANSWER: A) Energy storage
Rationale: Dietary fats are primarily used for energy storage in the body. They also serve
other functions, including insulation and cell membrane structure, but energy storage is
their main role.
Question 6:
Which mineral is crucial for maintaining fluid balance in the body?
A) Calcium
B) Sodium
C) Magnesium
D) Iron
CORRECT ANSWER: B) Sodium
Rationale: Sodium plays a key role in regulating fluid balance and blood pressure in the
body.
Question 7:
Which nutrient is primarily responsible for tissue repair and growth?
A) Carbohydrates
B) Fats
C) Protein
D) Fiber
,CORRECT ANSWER: C) Protein
Rationale: Proteins are essential for the growth and repair of tissues, making them
crucial for overall health.
Question 8:
What is the main function of antioxidants in the diet?
A) Provide energy
B) Enhance digestion
C) Protect cells from damage
D) Regulate metabolism
CORRECT ANSWER: C) Protect cells from damage
Rationale: Antioxidants help protect the body from oxidative stress and cellular
damage caused by free radicals.
Question 9:
What is the main source of omega-3 fatty acids?
A) Meat
B) Dairy
C) Fish
D) Eggs
CORRECT ANSWER: C) Fish
Rationale: Fatty fish such as salmon and mackerel are rich sources of omega-3 fatty
acids, which are beneficial for heart health.
Question 10:
Which of the following foods is highest in vitamin C?
A) Banana
B) Orange
C) Spinach
D) Chicken
CORRECT ANSWER: B) Orange
Rationale: Oranges are well known for their high vitamin C content, which is important
for immune function and skin health.
Question 11:
, Which fat is considered to be the healthiest for cooking?
A) Butter
B) Olive oil
C) Margarine
D) Coconut oil
CORRECT ANSWER: B) Olive oil
Rationale: Olive oil is rich in monounsaturated fats and has anti-inflammatory
properties, making it a healthier choice for cooking.
Question 12:
What is the primary source of dietary cholesterol?
A) Plant foods
B) Fruits
C) Animal products
D) Whole grains
CORRECT ANSWER: C) Animal products
Rationale: Cholesterol is found primarily in animal-based foods, such as meat, dairy,
and eggs.
Question 13:
Which of the following is a sign of dehydration?
A) Confusion
B) Weight gain
C) Excessive sweating
D) Increased appetite
CORRECT ANSWER: A) Confusion
Rationale: Confusion can be a symptom of severe dehydration, as fluid imbalance
affects cognitive function.
Question 14:
Which vitamin is important for blood clotting?
A) Vitamin A
B) Vitamin K
C) Vitamin B12
D) Vitamin E
Complete Study Guide | High-Yield Nutrition
Concepts, Dietary Guidelines, Macronutrients &
Micronutrients, Patient Care Applications, 200+
HESI-Style Questions with Rationales & Exam-
Focused Preparation for Nursing Students
Question 1:
Which macronutrient is the primary source of energy for the body?
A) Protein
B) Carbohydrates
C) Fats
D) Vitamins
CORRECT ANSWER: B) Carbohydrates
Rationale: Carbohydrates are the body's main source of energy, particularly during
high-intensity exercise. They are broken down into glucose, which is used for fuel.
Question 2:
Which vitamin is essential for the absorption of calcium?
A) Vitamin A
B) Vitamin C
C) Vitamin D
D) Vitamin E
CORRECT ANSWER: C) Vitamin D
Rationale: Vitamin D plays a crucial role in calcium absorption in the gut, helping to
maintain bone health and prevent osteoporosis.
Question 3:
What is the recommended daily intake of fiber for adults?
A) 5-10 grams
B) 20-30 grams
C) 35-50 grams
D) 15-20 grams
CORRECT ANSWER: B) 20-30 grams
Rationale: The recommended daily intake of dietary fiber for adults is 20-30 grams.
Adequate fiber intake is important for digestive health and can help prevent certain
diseases.
,Question 4:
Which of the following is a complete protein?
A) Rice
B) Beans
C) Quinoa
D) Corn
CORRECT ANSWER: C) Quinoa
Rationale: Quinoa is considered a complete protein because it contains all nine
essential amino acids, making it a valuable source of protein, especially for vegetarians
and vegans.
Question 5:
What is the primary function of dietary fat?
A) Energy storage
B) Muscle repair
C) Water regulation
D) Immune support
CORRECT ANSWER: A) Energy storage
Rationale: Dietary fats are primarily used for energy storage in the body. They also serve
other functions, including insulation and cell membrane structure, but energy storage is
their main role.
Question 6:
Which mineral is crucial for maintaining fluid balance in the body?
A) Calcium
B) Sodium
C) Magnesium
D) Iron
CORRECT ANSWER: B) Sodium
Rationale: Sodium plays a key role in regulating fluid balance and blood pressure in the
body.
Question 7:
Which nutrient is primarily responsible for tissue repair and growth?
A) Carbohydrates
B) Fats
C) Protein
D) Fiber
,CORRECT ANSWER: C) Protein
Rationale: Proteins are essential for the growth and repair of tissues, making them
crucial for overall health.
Question 8:
What is the main function of antioxidants in the diet?
A) Provide energy
B) Enhance digestion
C) Protect cells from damage
D) Regulate metabolism
CORRECT ANSWER: C) Protect cells from damage
Rationale: Antioxidants help protect the body from oxidative stress and cellular
damage caused by free radicals.
Question 9:
What is the main source of omega-3 fatty acids?
A) Meat
B) Dairy
C) Fish
D) Eggs
CORRECT ANSWER: C) Fish
Rationale: Fatty fish such as salmon and mackerel are rich sources of omega-3 fatty
acids, which are beneficial for heart health.
Question 10:
Which of the following foods is highest in vitamin C?
A) Banana
B) Orange
C) Spinach
D) Chicken
CORRECT ANSWER: B) Orange
Rationale: Oranges are well known for their high vitamin C content, which is important
for immune function and skin health.
Question 11:
, Which fat is considered to be the healthiest for cooking?
A) Butter
B) Olive oil
C) Margarine
D) Coconut oil
CORRECT ANSWER: B) Olive oil
Rationale: Olive oil is rich in monounsaturated fats and has anti-inflammatory
properties, making it a healthier choice for cooking.
Question 12:
What is the primary source of dietary cholesterol?
A) Plant foods
B) Fruits
C) Animal products
D) Whole grains
CORRECT ANSWER: C) Animal products
Rationale: Cholesterol is found primarily in animal-based foods, such as meat, dairy,
and eggs.
Question 13:
Which of the following is a sign of dehydration?
A) Confusion
B) Weight gain
C) Excessive sweating
D) Increased appetite
CORRECT ANSWER: A) Confusion
Rationale: Confusion can be a symptom of severe dehydration, as fluid imbalance
affects cognitive function.
Question 14:
Which vitamin is important for blood clotting?
A) Vitamin A
B) Vitamin K
C) Vitamin B12
D) Vitamin E
