Q91. Which food is a rich source of zinc?
a) Citrus fruits
b) Whole grains
c) Oysters
d) Leafy green vegetables
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Correct Answer: c) Oysters
Explanation: Oysters are one of the richest food sources of zinc. Other good sources include red meat, poultry, beans, nuts, and dairy products. Zinc from animal sources is more readily absorbed by the body.
Q92. In wound healing, zinc is important for:
a) Blood clotting
b) Pain relief
c) Tissue regeneration and inflammation control
d) Preventing infection
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Correct Answer: c) Tissue regeneration and inflammation control
Explanation: Zinc plays a crucial role in tissue regeneration and controlling inflammation, which are vital in the wound healing process. It promotes the repair of skin and mucosal membranes.
Q93. Zinc’s role in the immune system involves:
a) Decreasing inflammation
b) Increasing the production of white blood cells
c) Enhancing antibody production
d) All of the above
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Correct Answer: d) All of the above
Explanation: Zinc plays multiple roles in the immune system, including decreasing inflammation, increasing the production of white blood cells, and enhancing antibody production. It’s vital for maintaining a strong immune response.
Q94. Zinc is involved in the synthesis of which type of molecule in the body?
a) Lipids
b) Carbohydrates
c) Nucleic acids
d) Proteins
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Correct Answer: d) Proteins
Explanation: Zinc is involved in the synthesis of proteins in the body. It plays a role in both the creation of new proteins and the enzymatic processes that modify them, which is essential for growth and development.
Q95. The primary function of proteins in the human body is to:
a) Provide energy
b) Regulate blood sugar levels
c) Act as a structural component
d) Store nutrients
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Correct Answer: c) Act as a structural component
Explanation: Proteins primarily function as structural components in the body. They are crucial for building and repairing tissues, forming muscles, skin, and organs. Proteins also make up enzymes, hormones, and other essential molecules.
Q96. Enzymes, which are vital for metabolic processes, are primarily made of:
a) Fats
b) Carbohydrates
c) Proteins
d) Vitamins
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Correct Answer: c) Proteins
Explanation: Enzymes, which are catalysts for nearly all biochemical reactions in the body, are primarily made of proteins. Each enzyme is a protein that speeds up a specific chemical reaction, making them crucial for metabolism and other cellular processes.
Q97. Protein deficiency can lead to a condition known as:
a) Hyperproteinemia
b) Kwashiorkor
c) Hypertension
d) Osteoporosis
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Correct Answer: b) Kwashiorkor
Explanation: Protein deficiency can lead to a condition known as Kwashiorkor, commonly seen in children experiencing malnutrition. Symptoms include swollen abdomen, irritability, ulcerating dermatoses, and an enlarged liver.
Q98. The protein in hair and nails that makes them hard is:
a) Collagen
b) Elastin
c) Keratin
d) Actin
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Correct Answer: c) Keratin
Explanation: Keratin is the protein in hair and nails that makes them hard. It’s a structural protein that provides durability and protection to these and other cells in the skin.
Q99. Which fat-soluble vitamin requires dietary fat for absorption?
a) Vitamin C
b) Vitamin B12
c) Vitamin D
d) Vitamin K
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Correct Answer: c) Vitamin D
Explanation: Vitamin D is a fat-soluble vitamin that requires dietary fat for absorption. It’s essential for calcium absorption and bone health, among other functions.
The fat-soluble vitamins — A, D, E, and K — dissolve in fat and are stored in your body.
The water-soluble vitamins — C and the B-complex vitamins (such as vitamins B6, B12, niacin, riboflavin, and folate) — dissolve in water. Your body can’t store these vitamins.
Q100. Trans fats are primarily found in:
a) Whole grains
b) Fruits and vegetables
c) Processed and fried foods
d) Lean meats and fish
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Correct Answer: c) Processed and fried foods
Explanation: Trans fats are primarily found in processed and fried foods. They are created through the process of hydrogenation, which converts liquid vegetable oils into solid fats and increases their shelf life.