Which component of blood carries oxygen?
Answer and explanation
Correct answer: B. Red blood cells
- Step 1: Red blood cells contain haemoglobin.
- Step 2: Haemoglobin binds oxygen in the lungs.
Answer
Red blood cells.
Why not the others: White blood cells: these fight infection. Platelets: these help clotting. Plasma: this carries dissolved substances.
Practise more Multicellular Organisms and Life on Earth.
Free questions with an explanation for every one, and full timed National 5 (Scotland) mock tests.
More Multicellular Organisms and Life on Earth questions
- What is the function of the xylem in a plant?
- Which statement describes translocation?
- Water vapour escapes from a leaf through tiny pores. What are these pores called?
- Which pair of cells controls the opening and closing of a stoma?
- On a hot, windy day a plant loses water faster. Which process has increased?
- Which blood vessel carries blood away from the heart at high pressure?