Q.

Which vitamin helps in blood- coagulation?

A. Vitamin-A
B. Vitamin-c
C. Vitamin-K
D. Vitamin-E
Answer» C. Vitamin-K
Explanation: Vitamin K is a group of structurally similar, fat-soluble vitamins that are needed for the post translational modification of certain proteins required for blood coagulation and in metabolic pathways in bone and other tissue. They are 2-methyl- 1,4-naphthoquihone (3-)derivatives.
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