<prompt> Which of the following statement regarding Nitric Oxide Synthase is TRUE?It is inhibited by CalciumIt accepts electrons from NADHIt catalyzes a dioxygenase reactionIt requires NADPH, FAD, FMN and Heme iron  <response>: Nitric oxide synthase is an enzyme required for the synthesis of nitric oxide from arginine. It is a dimeric protein and contains heme, FAD, FMN, tetrahydrobiopterin and calmodulin. This enzyme utilises molecular oxygen and NADPH. Ref: Harpers Illustrated Biochemistry, 26th Edition, Page 572; Lippincotts Biochemistry, 2nd Edition, Page 85; Textbook of Biochemistry By D M Vasudevan, 3rd Edition, Page 178 