Question

The vitamin which is essential for blood clotting is

• A. vitamin-A
• B. vitamin-B
• C. vitamin-C
• D. vitamin-K

Answer 1

Answer: (D)

Vitamin-K, is essential for clotting of blood. It is necessary for the synthesis of various blood clotting factors like prothrombin ( $\text{II}$ ), proconvertin ( $\text{VII}$ ) stuart power factor ( $\text{X}$ ) time Christmas factor. It is obtained from cabbage, spinach and other green leafy vegetables. Vitamin-A is necessary for synthesis of rhodopsin of rod ceils and iodopsin of cone cells of the retina of eye. Vitamin-D promotes absorption of calcium and phosphorus by the intestine. It maintains the normal functioning of parathormone. Vitamin-B (b1)server as a coenzyme in the conversion of pyruvate into acetyl Co-A and $\alpha \text{ -}$ ketoglutarate.