IGCSE Physical Education Practice Exam 2026 - Free Practice Questions and Study Guide

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Which blood-related illness is characterized by a lack of red blood cells?

Leukemia (damage to white blood cells)

Hemophilia (blood doesn't clot)

Anemia (lack of red blood cells)

This question tests recognizing a blood disorder defined by a shortage of red blood cells. Red blood cells carry oxygen around the body, thanks to hemoglobin. When there aren’t enough red blood cells (or enough hemoglobin), oxygen transport is reduced, leading to the condition known as anemia. That’s why this option best fits “lack of red blood cells.” The other conditions involve different problems: leukemia mainly affects white blood cells, hemophilia is a clotting disorder where blood doesn’t clot properly, and thrombophilia involves a tendency for excessive clotting.

Thrombophilia (excessive blood clotting)