Which component of blood allows oxygen from the air to move from the lungs to the cells of the body?

• A. Red blood cells
• B. White blood cells
• C. Platelets
• D. Plasma

Answer: (A)

Verified step by step guidance

1. Begin by understanding the primary function of each blood component: Red blood cells, White blood cells, Platelets, and Plasma.
2. Red blood cells contain hemoglobin, a protein that binds to oxygen in the lungs and transports it to the cells throughout the body.
3. White blood cells are primarily involved in the immune response, helping to fight infections and do not play a direct role in oxygen transport.
4. Platelets are involved in blood clotting and wound healing, not in oxygen transport.
5. Plasma is the liquid component of blood that carries nutrients, hormones, and waste products, but does not directly transport oxygen to cells.