<prompt> All of the following enzymes are active within a cell exceptTrypsinFutneraseHexokinaseAlcohol dehydrogenase  <response>: Red Blood Cell Enzymopathies Hexokinase HK, the red cell enzyme with the lowest activity in the glycolytic pathway, catalyzes the initial step in the utilization of glucose and thus is required for both glycolysis and the pentose shunt and produces glucose 6-phosphate. Ref Robbins 9e pg 407 