The suffix S in ribosome unit indicates

Sedimentation coefficient.

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Solubility.

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Surface area.

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Size.

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Solution

The correct option is A Sedimentation coefficient.
The suffix S of the ribosomal units and other macromolecules like proteosome stands for Svedberg Units. Theodor Svedberg a Swedish scientist received a Nobel in 1926 for his discovery of the use of ultracentrifugation to investigate the properties of macromolecules. Under ultracentrifugation the macro-molecules are subjected to the centrifugal force of 1 million gravities, the technique is called as sedimentation. So svedberg unit actually refers to sedimentation coefficient of ribosomes and other macromolecules. So answer A is correct.

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