What distinguishes Co-enzymes from prosthetic groups?

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Co enzymes are tightly bound to the apoenzyme and cannot be removed.

Co enzymes are organic compounds that transiently associate with the apoenzyme during catalysis.

Co enzymes are metal ions required for enzymatic activity.

Co enzymes are permanent substrates of enzymes.

answer is C.

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Detailed Solution

Co-enzymes are organic compounds associated with apoenzymes.

A prosthetic group is an organic compound bound to the apoenzyme tightly and permanently while a coenzyme associated with the apoenzyme is a transient one usually occurring during the course of catalysis.

Furthermore, co-enzymes serve as co-factors in a number of different enzymes catalyzed reactions. The essential chemical components of many co-enzymes are vitamins, e.g., the coenzyme nicotinamide adenine dinucleotide (NAD) and NADP contain the vitamin niacin.

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