Question

Vitamin essential for blood clotting is

• A. Vitamin A
• B. Vitamin C
• C. Vitamin D
• D. Vitamin K

Hint:

Vitamin K is known as the anti-hemorrhagic vitamin because it is required for blood coagulation.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
Vitamins are organic compounds required in small quantities for normal physiological functions. Vitamin K is a fat-soluble vitamin.
Step 2: Detailed Explanation:
1. Mechanism: Vitamin K is required for the post-translational carboxylation of certain proteins.
2. Clotting Factors: It acts as a cofactor for the synthesis of four key blood clotting factors: II (Prothrombin), VII, IX, and X.
3. Deficiency: A deficiency of Vitamin K leads to a delayed clotting time and increased risk of hemorrhage (bleeding).
Step 3: Final Answer:
Vitamin K's primary and most vital role in the body is the facilitation of the blood coagulation cascade.