Inactive precursors of enzymes are known as:
Ans. C. ProenzymesProenzymes or zymogens are inactive enzymes which undergo irreversible covalent activation by the breakdown of one or more peptide bonds. For example, Chymotrypsin, pepsinogen and plasminogen are proenzymes that are converted to active enzymes chymotrypsin, pepsin and plasmin respectively.
Apo enzymes
Coenzymes
Proenzymes
Holoenzymes
Enzymes