Biology Topic Practice
Red Blood Cell Adaptations
Red blood cells (erythrocytes) are perfectly evolved to transport oxygen with maximum efficiency.
Why do red blood cells have no nucleus?
What is Red Blood Cell Adaptations?
"Red blood cells are specialized cells that transport oxygen from the lungs to the rest of the body."
Question 1
What is the main function of red blood cells?
Question 2
Which component of blood helps it to clot?
Question 3
Why can red blood cells carry large amounts of oxygen?
Oxygen Transport
Biconcave shape: Increases surface area for rapid diffusion of oxygen.
Haemoglobin: The red pigment that binds to oxygen.
No nucleus: More space to pack in haemoglobin molecules.
Exam Tip
Oxygen + Haemoglobin <=> Oxyhaemoglobin (a reversible reaction).
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