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Question

The suffix 'S' used with the description of ribosomal units stands for

A
Solubility
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B
Surface area
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C
Size
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D
Sedimentation coefficient
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Solution

The correct option is D Sedimentation coefficient

Ribosomes are made up of two subunits. Depending upon their rate of sedimentation, they can be 70S or 80S. The ‘S’ suffix represents the Svedberg’s unit, i.e., the sedimentation coefficient. 70S type of ribosome is present in prokaryotes and it is made of two subunits as 30S and 50S. 80S type of ribosome is present in eukaryotes and it consists of two subunits as 60S and 40S.


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