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

A student thinks that stents are used to thin the blood. Why is this incorrect?

Question 3

Choose the correct option to complete the statement. Enzymes have an ____ that fits a specific substrate

Question 4

Which component of blood helps it to clot?

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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