The prosthetic cofactor of various respiratory enzyme is
A
Ca
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B
B
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C
Mg
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D
Mo
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Solution
The correct option is A Mg Some enzymes require an extra organic (called as coenzyme) or inorganic molecule (called as cofactor) to catalyze the reaction. When the coenzyme or cofactor is tightly or covalently bound to the enzyme molecule, it is called as prosthetic group.
Magnesium is a prosthetic cofactor used by many respiratory enzymes, like hexokinase. In fact magnesium is an important inorganic ion, wherever ATP is used in a reaction.