<prompt> All are antioxidant except -Vitamin ACatalaseCysteinGlutamine  <response>: Ans. is d i.e., Glutamineo There are two types of antioxidant systems :-Enzymatic antioxidant systemThis includeCatalaseSuperoxide dismutase SODGlutathione peroxidaseNon-enzymatic antioxidant systemThis is further subdivided intoVitamins : Vitamin E, Vitamin A beta carotene. Vitamin C.Minerals : Selenium, Copper, Zinc, ManganeseTissue proteins : Transferrin, ferritin, lactoferrin, ceruloplasminAmino acids : Glutathione, Cysteine 