<prompt> Which of the following metabolic reactions is not catalysed by microsomal enzymes?GlucuronidationAcetylationOxidationReduction  <response>: PHASE 1 Oxidation Reduction All are catalysed by microsomal enzymes PHASE 2 Glucuronidation Acetylation Methylation All are catalyzed by non microsomal enzymes except glucuronidation which is catalysed by microsomal enzymes. 