Which one of the following statements is correct, with reference to enzymes?
(a) Apoenzyme = Holoenzyme + Coenzyme
(b) Holoenzyme = Apoenzyme + Coenzyme
(c) Coenzyme = Apoenzyme + Holoenzyme
(d) Holoenzyme = Coenzyme + Cofactor
(b) Holoenzyme It is a conjugate complete catalytically active enzyme together with its coenzyme.
Apoenzyme The protein part of catabolically active enzyme is called apoenzyme.
Coenzyme Some enzymes require additional organic or metallo-organic molecules for their activity. These molecules are called coenzyme. So, holoenzyme is apoenzyme together with coenzyme hence option (b) is correct.