#1
Which element is the most abundant in the human body by mass?
Carbon
Oxygen
Hydrogen
Nitrogen
#2
What molecule is primarily responsible for carrying oxygen in the bloodstream?
Glucose
ATP
Hemoglobin
Cholesterol
#3
What is the role of phosphorus in the human body?
Oxygen transport
Muscle contraction
Bone and teeth formation
Hormone production
#4
Fluoride is mainly known for its role in:
Improving heart health
Preventing dental caries
Enhancing muscle function
Regulating blood sugar levels
#5
What is the primary function of iron in the human body?
Maintaining bone density
Regulating body temperature
Oxygen transport and storage
Supporting immune function
#6
Which of the following is NOT a function of calcium in the human body?
Muscle function
Blood clotting
Energy production
Bone formation
#7
What is the primary role of magnesium ions in the human body?
Acting as an enzyme cofactor
Transporting oxygen in blood
Facilitating muscle contraction
Direct involvement in DNA synthesis
#8
Which vitamin is crucial for the coagulation of blood?
Vitamin A
Vitamin B12
Vitamin D
Vitamin K
#9
Which of the following elements is a component of the molecule ATP?
Sulfur
Phosphorus
Magnesium
Iron
#10
Zinc is essential for:
Blood clotting
Wound healing
Muscle contraction
Oxygen transport
#11
Which compound is essential for the synthesis of thyroid hormones?
Iron
Iodine
Calcium
Magnesium
#12
Selenium is an essential element for the function of which of the following?
Antioxidant enzymes
Oxygen-transporting proteins
Hormones involved in metabolism
Structural components of cell membranes
#13
Molybdenum is a cofactor for enzymes that are important for:
Breaking down amino acids
Blood clotting
Oxygen transport
Muscle contraction
#14
Nickel, though required in trace amounts, is involved in:
DNA repair and replication
The metabolism of fatty acids and urea
The synthesis of vitamin D
The regulation of blood glucose levels
#15
Boron is believed to influence:
The strength of magnetic fields in the body
The absorption and metabolism of calcium and magnesium
The transmission of nerve impulses
The synthesis of genetic material