Hemophilia A is a hereditary blood disorder caused by inadequate activity or absence of:
A) Factor VIII
B) Prothrombin
C) von Willebrand complex
D) Intrinsic factor
Ans: A
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Factor VIII gene deficiency or absence is the cause of hemophilia A. Intrinsic factor and prothrombin are part of the coagulation process and unrelated to hemophilia A. Von Willebrand factor (vWF) disease is caused by a lack of vWF complex, which binds and stabilizes factor VIII.
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