A) vitamin-A
B) vitamin-B
C) vitamin-C
D) vitamin-K
Correct Answer: D
Solution :
Vitamin-K, is essential for clotting of blood. It is necessary for the synthesis of various blood clotting factors like prothrombin (\[\text{II}\]), proconvenin (\[\text{VII}\]) stuart power factor (\[\text{X}\]) times Christmas factor. It is obtained from cabbage, spinach and other green leafy vegetables. Vitamin-A is necessary for synthesis of rhodopsin of rod cells 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) serve as a co-enzyme in the conversion of pyruvate into acetyl CO-A and \[\text{ }\!\!\alpha\!\!\text{ -}\]ketogluterate.
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