<prompt> True about vitamin K-ed synthesis of factor II, VII, IX XDoesnt require exposure to sunlightCause hemolytic anemiaAll  <response>: Ans. is a i.e., ed synthesis of factor II, VII, IX X; b i.e., Doesnt require exposure to sunlight; c i.e., Cause hemolytic anemia o Half life of vit K is 72 hours - Mahenderbhan Singh 5thie - 348 Vit K acts as a cofactor at a late stage in the synthasis of coagulation factors by liver - Prothrombin factor II, Factor VII, IX and X also protein C Protein S. Vit K3 Menadione can cause hemolysis-contraindicated in G-6-PD deficiency and neonates. o Vitamin D requires sun exposure not vitamin K. 