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Question

Enzymes that utilize ATP in phosphate transfer require an alkaline earth metal (M) as the cofactor, M is:

A
Be
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B
Ca
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C
Mg
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D
Sr
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Solution

The correct option is C Mg
Adenosine Triphosphate (ATP) is the main source of energy in cells in the biological system. ATP is activated due to the presence of magnesium ions. Every enzyme that utilizes ATP in the transfer of phosphate requires an alkaline earth metal Magnesium as cofactor.

Hence, Mg is essential as a cofactor for almost all enzymes which require ATP for phosphate transfer. Magnesium is the most useful metal in the biological process.

Hence, option (b) is correct.

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