Multiple choice

Carry oxygen in the blood

  1. Plasma

  2. Red Blood Cells

  3. White Blood Cells

  4. Platelets

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Red blood cells, or erythrocytes, contain the protein hemoglobin, which binds to oxygen in the lungs and transports it to tissues throughout the body. White blood cells fight infections, platelets help with clotting, and plasma is the liquid component that transports nutrients and waste.