Which of the following is not synthesized in an inactive precursor form?: (A) Carboxypeptidase, (B) Colipase, (C) Phospholipase, (D) Pepsin
Answer is C. Most of the digestive tract enzymes are first synthesized in the form of an inactive precursor, from which the active enzyme is cleaved. Pepsinogen, pro-colipase, procarboxypeptidase are the precursor forms for the options given. Phospholipase is not synthesized in a precursor form.