Q. Co-factor (prosthetic group) is a part of holoenzyme. It is

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Solution:

Enzymes are simple if they are made of only proteins ( ., pepsin, amylase etc.) while conjugated enzymes have an additional non-protein cofactor which may be organic or inorganic. Loosely attached organic cofactor is coenzyme (e.g., ) while firmly attached one is prosthetic group (e.g., heme, biotin). The intact enzyme-cofactor complex is called holoenzyme. When the cofactor is removed, the remaining protein which is inactive is called apoenzyme.