1. Which of the following nutrients is primarily responsible for
the growth and repair of body tissues?
a) Carbohydrates
b) Proteins
c) Fats
d) Vitamins
Answer: b) Proteins
Rationale: Proteins are essential for the growth, repair, and
maintenance of body tissues. They are made up of amino acids, which
the body uses to build and repair tissues such as muscles, skin, and
organs.
2. What is the primary function of carbohydrates in the body?
a) Provide energy
b) Build muscles
c) Maintain immune function
d) Regulate blood sugar levels
Answer: a) Provide energy
Rationale: Carbohydrates are the body’s primary source of energy,
especially for the brain and muscles. They are broken down into
glucose, which is used for fuel during physical activity.
3. Which vitamin is crucial for calcium absorption in the body?
a) Vitamin A
b) Vitamin B12
c) Vitamin D
d) Vitamin E
,Answer: c) Vitamin D
Rationale: Vitamin D is vital for the absorption of calcium in the
intestines. It helps regulate calcium levels, which are essential for bone
health.
4. Which of the following is a source of complete protein?
a) Lentils
b) Almonds
c) Chicken breast
d) Rice
Answer: c) Chicken breast
Rationale: Complete proteins contain all nine essential amino acids.
Animal products, like chicken, contain all the essential amino acids,
whereas plant-based sources may lack one or more.
5. What is the recommended daily intake of fiber for adults?
a) 10-15 grams
b) 15-25 grams
c) 25-38 grams
d) 50 grams
Answer: c) 25-38 grams
Rationale: The recommended daily intake of fiber is 25 grams for adult
women and 38 grams for adult men. Fiber aids in digestion, helps
maintain a healthy weight, and reduces the risk of chronic diseases.
6. What is the main source of energy during prolonged exercise?
a) Fat
b) Protein
, c) Carbohydrates
d) Water
Answer: a) Fat
Rationale: During prolonged exercise, the body uses fat as a primary
energy source after glycogen stores are depleted. Fat provides a slow
but steady supply of energy.
7. Which mineral is essential for oxygen transport in the blood?
a) Magnesium
b) Iron
c) Potassium
d) Zinc
Answer: b) Iron
Rationale: Iron is a key component of hemoglobin, the protein in red
blood cells that carries oxygen throughout the body.
8. What is the primary benefit of omega-3 fatty acids?
a) Improve vision
b) Lower cholesterol levels
c) Promote digestion
d) Strengthen bones
Answer: b) Lower cholesterol levels
Rationale: Omega-3 fatty acids, found in fish and certain plant oils, are
known to lower bad cholesterol (LDL) levels and reduce the risk of
heart disease.
9. What does the term “empty calories” refer to?
a) Foods that provide essential nutrients
b) Foods high in sugar and fat with little nutritional value
the growth and repair of body tissues?
a) Carbohydrates
b) Proteins
c) Fats
d) Vitamins
Answer: b) Proteins
Rationale: Proteins are essential for the growth, repair, and
maintenance of body tissues. They are made up of amino acids, which
the body uses to build and repair tissues such as muscles, skin, and
organs.
2. What is the primary function of carbohydrates in the body?
a) Provide energy
b) Build muscles
c) Maintain immune function
d) Regulate blood sugar levels
Answer: a) Provide energy
Rationale: Carbohydrates are the body’s primary source of energy,
especially for the brain and muscles. They are broken down into
glucose, which is used for fuel during physical activity.
3. Which vitamin is crucial for calcium absorption in the body?
a) Vitamin A
b) Vitamin B12
c) Vitamin D
d) Vitamin E
,Answer: c) Vitamin D
Rationale: Vitamin D is vital for the absorption of calcium in the
intestines. It helps regulate calcium levels, which are essential for bone
health.
4. Which of the following is a source of complete protein?
a) Lentils
b) Almonds
c) Chicken breast
d) Rice
Answer: c) Chicken breast
Rationale: Complete proteins contain all nine essential amino acids.
Animal products, like chicken, contain all the essential amino acids,
whereas plant-based sources may lack one or more.
5. What is the recommended daily intake of fiber for adults?
a) 10-15 grams
b) 15-25 grams
c) 25-38 grams
d) 50 grams
Answer: c) 25-38 grams
Rationale: The recommended daily intake of fiber is 25 grams for adult
women and 38 grams for adult men. Fiber aids in digestion, helps
maintain a healthy weight, and reduces the risk of chronic diseases.
6. What is the main source of energy during prolonged exercise?
a) Fat
b) Protein
, c) Carbohydrates
d) Water
Answer: a) Fat
Rationale: During prolonged exercise, the body uses fat as a primary
energy source after glycogen stores are depleted. Fat provides a slow
but steady supply of energy.
7. Which mineral is essential for oxygen transport in the blood?
a) Magnesium
b) Iron
c) Potassium
d) Zinc
Answer: b) Iron
Rationale: Iron is a key component of hemoglobin, the protein in red
blood cells that carries oxygen throughout the body.
8. What is the primary benefit of omega-3 fatty acids?
a) Improve vision
b) Lower cholesterol levels
c) Promote digestion
d) Strengthen bones
Answer: b) Lower cholesterol levels
Rationale: Omega-3 fatty acids, found in fish and certain plant oils, are
known to lower bad cholesterol (LDL) levels and reduce the risk of
heart disease.
9. What does the term “empty calories” refer to?
a) Foods that provide essential nutrients
b) Foods high in sugar and fat with little nutritional value
