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Question
Prokaryotic ribosomes are 70S. Here 'S' refers to:
Prokaryotic ribosomes are 70S. Here 'S' refers to:
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Solution
The correct option is A Svedberg unit
The unit of measurement is the Svedberg unit, a measure of the rate of sedimentation in centrifugation rather than size. The prokaryotic 70S ribosomes are made of 50S and 30S subunits. Prokaryotes have 70S ribosomes, each consisting of a small (30S) and a large (50S) subunit. Their small subunit has a 16S RNA subunit (consisting of 1540 nucleotides) bound to 21 proteins. The large subunit is composed of a 5S RNA subunit, a 23S RNA subunit and 31 proteins.
The unit of measurement is the Svedberg unit, a measure of the rate of sedimentation in centrifugation rather than size. The prokaryotic 70S ribosomes are made of 50S and 30S subunits. Prokaryotes have 70S ribosomes, each consisting of a small (30S) and a large (50S) subunit. Their small subunit has a 16S RNA subunit (consisting of 1540 nucleotides) bound to 21 proteins. The large subunit is composed of a 5S RNA subunit, a 23S RNA subunit and 31 proteins.
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