A) the formation of prothrombin
B) the formation of thromboplastin
C) the conversion of fibrinogen into fibrin
D) the conversion of prothrombin into thrombin
Correct Answer: A
Solution :
Vitamin K also called anti-haemorrhagic factor is a fat soluble vitamin and is essential for the formation of prothrombin from the liver. Deficiency of vitamin K causes hypoprothrombinemia which interferes with blood clotting. Vitamin K is also synthesized by intestinal bacteria.
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