Moderate

The function of vitamin K is______________?

Correct answer: B. Prothrombin formation

  • A. Thrombin formation
  • B. Prothrombin formation
  • C. Fibrin formation
  • D. Thromboplastin formation

Explanation

Vitamin K is required in the liver for synthesis of several clotting factors, especially prothrombin (factor II). It does not directly form thrombin or fibrin, which are produced later in the coagulation cascade.

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