Elements of the human body

Which element is the most abundant in the human body by mass?

• Carbon

• Hydrogen

• Oxygen

• Calcium

Which of the following elements is essential for forming amino acids and proteins in the human body?

• Phosphorus

• Nitrogen

• Calcium

• Hydrogen

Calcium is primarily important in the human body for which of the following functions?

• Energy production

• Oxygen transport

• Bone and teeth formation

• pH balance

The element Phosphorus is involved in which critical bodily function? (Hint: ATP)

• Formation of hemoglobin

• Nerve impulse transmission

• Cellular energy transfer

• Immune response

Which element contributes significantly to the composition of the human body’s water content?

• Carbon

• Hydrogen

• Nitrogen

• Phosphorus

Carbon is a fundamental element in the human body because it:

• Helps in oxygen transport

• Is a key component of nucleic acids and lipids

• Regulates body temperature

• Assists in muscle contraction

Nitrogen is most commonly found in which type of biomolecule in the human body?

• Carbohydrates

• Lipids

• Proteins

• Nucleic acids

The element that contributes to the strength and rigidity of bones and teeth is:

• Carbon

• Phosphorus

• Nitrogen

• Calcium

Which of the following elements is found in both the human body's DNA and RNA?

• Calcium

• Phosphorus

• Carbon

• Hydrogen

What role does hydrogen play in the human body's physiological processes?

• It assists in oxygen transport

• It helps regulate the body’s pH levels.

• It is a major component of amino acids.

• It contributes to bone mineralization