Question:

In the 50S ribosomal subunit, the sedimentation coefficient values of rRNA are 5S and __________.

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The large subunit of the 70S ribosome carries two rRNAs.
Updated On: Jul 4, 2026
  • 16S
  • 18S
  • 23S
  • 30S
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The Correct Option is C

Solution and Explanation

Step 1: The prokaryotic 70S ribosome is made of a 30S small subunit and a 50S large subunit.
Step 2: The 30S subunit carries the 16S rRNA, while the 50S subunit carries two rRNA molecules, the 23S and the 5S rRNA, along with about 34 proteins.
Step 3: Since the question asks about the 50S subunit, the second rRNA alongside 5S is 23S, so option (C) is correct.
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