NR-228: Nutrition, Health & Wellness
questions and answers with rationales 2025
1. Which nutrient is the body’s primary source of energy?
a) Protein
b) Fat
c) Carbohydrate
d) Vitamins
Carbohydrates are the body’s main energy source, providing
glucose for immediate fuel or storage.
2. Which vitamin is essential for calcium absorption?
a) Vitamin A
b) Vitamin K
c) Vitamin D
d) Vitamin C
Vitamin D promotes calcium absorption in the intestines, critical
for bone health.
3. Which nutrient helps in building and repairing body tissues?
a) Protein
b) Carbohydrate
c) Fat
d) Fiber
Proteins supply amino acids necessary for tissue growth, repair,
and maintenance.
,4. Which mineral is most important for oxygen transport in the
blood?
a) Calcium
b) Zinc
c) Iron
d) Potassium
Iron is a key component of hemoglobin, enabling oxygen transport
in red blood cells.
5. Which type of fat is considered the healthiest?
a) Saturated fat
b) Trans fat
c) Unsaturated fat
d) Hydrogenated fat
Unsaturated fats, especially monounsaturated and
polyunsaturated, support heart health.
6. Which food is highest in dietary fiber?
a) Chicken breast
b) Cheese
c) Black beans
d) Yogurt
Legumes like black beans are rich in soluble and insoluble fiber,
aiding digestion.
7. Which vitamin deficiency causes scurvy?
a) Vitamin A
b) Vitamin D
c) Vitamin K
, d) Vitamin C
Vitamin C deficiency impairs collagen synthesis, leading to scurvy.
8. Which is a complete protein source?
a) Rice
b) Eggs
c) Almonds
d) Lentils
Complete proteins contain all essential amino acids; eggs are a
prime example.
9. Which nutrient should be limited to reduce hypertension risk?
a) Sodium
b) Potassium
c) Magnesium
d) Calcium
Excess sodium increases blood pressure by promoting fluid
retention.
10. Which vitamin is synthesized in the skin upon sunlight
exposure?
a) Vitamin A
b) Vitamin D
c) Vitamin E
d) Vitamin K
UV light triggers vitamin D production in the skin.
11. Which macronutrient has the highest caloric density per
gram?
a) Carbohydrate
b) Protein
questions and answers with rationales 2025
1. Which nutrient is the body’s primary source of energy?
a) Protein
b) Fat
c) Carbohydrate
d) Vitamins
Carbohydrates are the body’s main energy source, providing
glucose for immediate fuel or storage.
2. Which vitamin is essential for calcium absorption?
a) Vitamin A
b) Vitamin K
c) Vitamin D
d) Vitamin C
Vitamin D promotes calcium absorption in the intestines, critical
for bone health.
3. Which nutrient helps in building and repairing body tissues?
a) Protein
b) Carbohydrate
c) Fat
d) Fiber
Proteins supply amino acids necessary for tissue growth, repair,
and maintenance.
,4. Which mineral is most important for oxygen transport in the
blood?
a) Calcium
b) Zinc
c) Iron
d) Potassium
Iron is a key component of hemoglobin, enabling oxygen transport
in red blood cells.
5. Which type of fat is considered the healthiest?
a) Saturated fat
b) Trans fat
c) Unsaturated fat
d) Hydrogenated fat
Unsaturated fats, especially monounsaturated and
polyunsaturated, support heart health.
6. Which food is highest in dietary fiber?
a) Chicken breast
b) Cheese
c) Black beans
d) Yogurt
Legumes like black beans are rich in soluble and insoluble fiber,
aiding digestion.
7. Which vitamin deficiency causes scurvy?
a) Vitamin A
b) Vitamin D
c) Vitamin K
, d) Vitamin C
Vitamin C deficiency impairs collagen synthesis, leading to scurvy.
8. Which is a complete protein source?
a) Rice
b) Eggs
c) Almonds
d) Lentils
Complete proteins contain all essential amino acids; eggs are a
prime example.
9. Which nutrient should be limited to reduce hypertension risk?
a) Sodium
b) Potassium
c) Magnesium
d) Calcium
Excess sodium increases blood pressure by promoting fluid
retention.
10. Which vitamin is synthesized in the skin upon sunlight
exposure?
a) Vitamin A
b) Vitamin D
c) Vitamin E
d) Vitamin K
UV light triggers vitamin D production in the skin.
11. Which macronutrient has the highest caloric density per
gram?
a) Carbohydrate
b) Protein
