Organic compound firmly bound to an apoenzyme to make it catalytically active is

Step-by-step solution

Cofactors are the non-protein constituents that bound to an enzyme to make it catalytically active. Cofactors can be of 3 types: 1 . Prosthetic groups: Organic compound firmly bound to an apoenzyme, e.g., haem is a prosthetic group for peroxidase and catalase which mediates the breakdown of hydrogen peroxide to water and oxygen. 2 . Coenzymes: Organic compound loosely bound to an apoenzyme, e.g., most of the members of the vitamin B complex. Coenzymes NAD (nicotinamide adenine dinucleotide) and NADP (nicotinamide a