<prompt> Enzymatic activity is measured inmgdlmicrogramlitremglitremolsecond  <response>: Enzyme activity is expressed as micromoles of substrate conveed to product per minute under specified assay conditions. One standard unit or International Unit of enzyme activity U is the amount of enzyme that will conve one micromole of substrate per minute per litre of sample and is abbreted as UL.Ref: DM Vasudevan, Page no: 58 