Nutrition and Dietetics for Nursing Exam
questions and verified answers with
rationales
1. Which nutrient is the body's primary source of energy?
A. Protein
B. Fat
C. Carbohydrate
D. Vitamins
Answer: C. Carbohydrate
Rationale: Carbohydrates are the body's preferred and
primary source of energy, especially for the brain and muscles
during normal activity.
2. Which nutrient is primarily responsible for growth and
tissue repair?
A. Carbohydrates
B. Proteins
C. Fats
D. Minerals
Answer: B. Proteins
Rationale: Proteins supply amino acids necessary for building,
repairing, and maintaining body tissues.
,3. Which vitamin is essential for calcium absorption?
A. Vitamin A
B. Vitamin C
C. Vitamin D
D. Vitamin K
Answer: C. Vitamin D
Rationale: Vitamin D promotes calcium absorption from the
gastrointestinal tract, supporting healthy bones and teeth.
4. Which mineral is essential for oxygen transport in the
blood?
A. Calcium
B. Iron
C. Potassium
D. Sodium
Answer: B. Iron
Rationale: Iron forms part of haemoglobin, which transports
oxygen throughout the body.
5. The Body Mass Index (BMI) is used to assess:
A. Blood pressure
B. Nutritional status
C. Blood glucose
D. Kidney function
,Answer: B. Nutritional status
Rationale: BMI estimates body weight relative to height and
is commonly used to screen for underweight, overweight, and
obesity.
6. Which food is the richest source of protein?
A. Rice
B. Eggs
C. Bananas
D. Potatoes
Answer: B. Eggs
Rationale: Eggs provide high-quality complete protein
containing all essential amino acids.
7. Which vitamin deficiency commonly causes scurvy?
A. Vitamin A
B. Vitamin B12
C. Vitamin C
D. Vitamin D
Answer: C. Vitamin C
Rationale: Vitamin C deficiency results in impaired collagen
formation, leading to scurvy.
8. Which nutrient provides the highest amount of energy
per gram?
, A. Protein
B. Carbohydrate
C. Fat
D. Water
Answer: C. Fat
Rationale: Fat provides approximately 9 kcal/g, compared
with 4 kcal/g from carbohydrates and proteins.
9. Which food group is the best source of dietary fibre?
A. Fruits and vegetables
B. Butter
C. Meat
D. Fish
Answer: A. Fruits and vegetables
Rationale: Fruits, vegetables, legumes, and whole grains are
rich in dietary fibre.
10. Water accounts for approximately what percentage of
an adult's body weight?
A. 20%
B. 40%
C. 60%
D. 90%
Answer: C. 60%
questions and verified answers with
rationales
1. Which nutrient is the body's primary source of energy?
A. Protein
B. Fat
C. Carbohydrate
D. Vitamins
Answer: C. Carbohydrate
Rationale: Carbohydrates are the body's preferred and
primary source of energy, especially for the brain and muscles
during normal activity.
2. Which nutrient is primarily responsible for growth and
tissue repair?
A. Carbohydrates
B. Proteins
C. Fats
D. Minerals
Answer: B. Proteins
Rationale: Proteins supply amino acids necessary for building,
repairing, and maintaining body tissues.
,3. Which vitamin is essential for calcium absorption?
A. Vitamin A
B. Vitamin C
C. Vitamin D
D. Vitamin K
Answer: C. Vitamin D
Rationale: Vitamin D promotes calcium absorption from the
gastrointestinal tract, supporting healthy bones and teeth.
4. Which mineral is essential for oxygen transport in the
blood?
A. Calcium
B. Iron
C. Potassium
D. Sodium
Answer: B. Iron
Rationale: Iron forms part of haemoglobin, which transports
oxygen throughout the body.
5. The Body Mass Index (BMI) is used to assess:
A. Blood pressure
B. Nutritional status
C. Blood glucose
D. Kidney function
,Answer: B. Nutritional status
Rationale: BMI estimates body weight relative to height and
is commonly used to screen for underweight, overweight, and
obesity.
6. Which food is the richest source of protein?
A. Rice
B. Eggs
C. Bananas
D. Potatoes
Answer: B. Eggs
Rationale: Eggs provide high-quality complete protein
containing all essential amino acids.
7. Which vitamin deficiency commonly causes scurvy?
A. Vitamin A
B. Vitamin B12
C. Vitamin C
D. Vitamin D
Answer: C. Vitamin C
Rationale: Vitamin C deficiency results in impaired collagen
formation, leading to scurvy.
8. Which nutrient provides the highest amount of energy
per gram?
, A. Protein
B. Carbohydrate
C. Fat
D. Water
Answer: C. Fat
Rationale: Fat provides approximately 9 kcal/g, compared
with 4 kcal/g from carbohydrates and proteins.
9. Which food group is the best source of dietary fibre?
A. Fruits and vegetables
B. Butter
C. Meat
D. Fish
Answer: A. Fruits and vegetables
Rationale: Fruits, vegetables, legumes, and whole grains are
rich in dietary fibre.
10. Water accounts for approximately what percentage of
an adult's body weight?
A. 20%
B. 40%
C. 60%
D. 90%
Answer: C. 60%
