Q60. Which organ is primarily responsible for regulating iron excretion?
a) Liver
b) Kidneys
c) Spleen
d) Intestines
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Correct Answer: d) Intestines
Explanation: The intestines are primarily responsible for regulating iron excretion. The body controls iron levels more through absorption than excretion, as there is no active excretion mechanism for iron.
Q61. Iron’s role in the immune system is primarily related to what function?
a) Wound healing
b) Cell division
c) Production of antibodies
d) Functioning of white blood cells
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Correct Answer: d) Functioning of white blood cells
Explanation: Iron is crucial for the proper functioning of white blood cells, key components of the immune system. It supports their growth and differentiation, which is vital for an effective immune response.
Q62. In pregnant women, iron deficiency can increase the risk of what?
a) Gestational diabetes
b) Preeclampsia
c) Low birth weight
d) Congenital heart defects
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Q64. Which organ is primarily responsible for regulating magnesium levels in the body?
a) Liver
b) Kidneys
c) Heart
d) Lungs
Q63. What percentage of the body’s magnesium is stored in the bones?
a) About 20%
b) About 40%
c) About 60%
d) About 80%
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Correct Answer: c) About 60%
Explanation: Approximately 60% of the body’s magnesium is stored in the bones. This reflects its vital role in bone health and structure. The rest is found in muscles, soft tissues, and bodily fluids.
Q64. Which organ is primarily responsible for regulating magnesium levels in the body?
a) Liver
b) Kidneys
c) Heart
d) Lungs
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Correct Answer: b) Kidneys
Explanation: The kidneys are primarily responsible for regulating magnesium levels in the body. They control the excretion and reabsorption of magnesium, maintaining its balance and concentration in the bloodstream.
Q65. Magnesium is essential for the proper functioning of which enzyme system?
a) Digestive enzymes
b) ATP-producing enzymes
c) Detoxifying enzymes
d) Photoreceptor enzymes
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Correct Answer: b) ATP-producing enzymes
Explanation: Magnesium is essential for the proper functioning of ATP-producing enzymes. It acts as a cofactor for all enzymes that utilize or synthesize ATP, the energy currency of the cell. This makes magnesium critical for energy production in the body.
Q66. Magnesium assists in regulating the body’s level of:
a) Cortisol
b) Insulin
c) Estrogen
d) Adrenaline
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Correct Answer: b) Insulin
Explanation: Magnesium assists in regulating the body’s level of insulin. It plays a role in insulin’s actions and in carbohydrate metabolism, which can affect blood sugar levels. Adequate magnesium intake is important for preventing insulin resistance and type 2 diabetes.
Q67. The interaction between magnesium and which vitamin is important for bone health?
a) Vitamin A
b) Vitamin B12
c) Vitamin C
d) Vitamin D
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Correct Answer: d) Vitamin D
Q68. Magnesium aids in the maintenance of healthy:
a) Skin only
b) Hair only
c) Nails only
d) Skin, hair, and nails
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Correct Answer: d) Skin, hair, and nails
Explanation: Magnesium aids in the maintenance of healthy skin, hair, and nails. It plays a role in protein synthesis and cellular growth and repair, which are important for the health and appearance of skin, hair, and nails.
Q69. Manganese is necessary for the proper utilization of which vitamins?
a) Vitamin A and D
b) Vitamin B1 and B12
c) Vitamin E and K
d) Vitamin C and B6
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Correct Answer: d) Vitamin C and B6
Explanation: Manganese is necessary for the proper utilization of vitamins C and B6. It aids in the metabolic processes involving these vitamins, enhancing their effectiveness in the body.
Q70. Molybdenum primarily functions as:
a) A structural component of bones
b) A cofactor for enzymes
c) A hormone regulator
d) An energy storage molecule
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Correct Answer: b) A cofactor for enzymes
Explanation: Molybdenum primarily functions as a cofactor for several important enzymes in the human body. These enzymes are involved in various metabolic processes, including the breakdown of certain amino acids and the processing of drugs and toxins.