<prompt> Mineral with antioxidant property:MolybdenumSeleniumCopperZinc  <response>: Ans. b Selenium. Ref. Harper, Biochemistry, 25th ed., 659,766SeleniumFeaturesConstituent of glutathione peroxidaseSynergistic anti-oxidant with vitamin EEssential trace elementSelenocysteine is an L--amino acid found in a handful of proteins. As its name implies, a selenium atom replaces the sulfur of its structural analog, cysteine. The pK3 of selenocysteine, 5.2, is 3 units lower than that of cysteine. Since selenocysteine is inserted into polypeptides during translation, it is commonly referred to as the 21st amino acid.However, unlike the other 20 genetically encoded amino acids, selenocysteine is not specified by a simple three-letter codon.Trace elements TRACE ELEMENTDEFICIENCY STATESEXCESS STATES1ArsenicAcute Fatty YellowliverHCCNeurologic dysfunctionGIT diseasesSkin cancerMees linesAngiosarcoma of liverNCPF2Cadmium-Madness, paralysis agitans,3CopperGrowth failureWilsons diseaseNeutropenia CVS disordersGenu valgumMenkes kinky hair disease04ChromiumPEM, CVS diseaseArthritisDermatitisDiarroeaSeptal perforation5IodineGoiter, growth failureJod basedow phenomenonWolf chekoff phenomenon6Lead-Abdominal ColicAnaemiaBlue gum linesBasophilic stipplingConstipationConvulsionsDeliriumPeripheral neuropathy ParalysisFailure of kidneysMetaphyseal lines7ManganeseImpaired growthAtaxiaManganese madnessParalysis agitansCVS disorders8MolybdenumGrowth failureGout bony defects Oral esophageal carcinomaGenu valgum9Mercury-Minimotas disease Mercural erythesim Hatters shake10SeleniumPEM, muscle dystrophy, CVS diseasesDCM, diarrhea, Keshan diseaseArthritis, dermatitis11AluminiumAlzheimers diseaseOsteodystrophy12ZincNight blindnessHypogonadismImpaired wound healingAcrodermatitis enteropathicaGI irritationGrowth retardationFlaky paint dermatitis, loss of taste 