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Question

The two subunits of ribosome remain united at a critical ion level of:

A
Magnesium
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B
Calcium
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C
Copper
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D
Manganese
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Solution

The correct option is A Magnesium
Magnesim ions are essential in binding the ribosomes to the RNA during the translation process. Concentrations of magnesium lower than the critical concentration lead to dissociation of the RNA from the ribosomal subunit. This leads to dissociation of the two subunits of ribosomes, which only come together during translation.

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