If an inorganic ion such as Mg²⁺ is required for enzyme activity, it is usually described as a A) coenzyme B) prosthetic group C) holoenzyme D) cofactor E) apoenzyme

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An inorganic ion required for enzyme activity is called a cofactor. Coenzymes are organic molecules required for enzyme activity, prosthetic groups are non-amino acid components permanently attached to a protein, holoenzyme is the active form of an enzyme that contains both the protein and any necessary coenzymes or cofactors, and apoenzyme is the protein portion of an enzyme without any cofactors or coenzymes.

If an Inorganic Ion Such as Mg2+ Is Required for Enzyme

If an Inorganic Ion Such as Mg²⁺ Is Required for Enzyme