Multiple choice

Absence of which factor causes haemophilia?

  1. Factor Rh

  2. Factor I

  3. Factor II

  4. Factor VIII

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

Hemophilia A is caused by deficiency of Factor VIII (antihemophilic factor), a clotting protein essential for the coagulation cascade. Without sufficient Factor VIII, blood cannot clot properly, leading to prolonged bleeding. Factor IX deficiency causes Hemophilia B, but Factor VIII is the most common form.