Question

RNA polymerase-I transcribes eukaryotic ribosome which does not consist of

• A. 28S rRNA
• B. 5S rRNA
• C. 5.8S rRNA
• D. 18S rRNA

Answer 1

The correct option is B 5S rRNA

• Eukaryotic 80S ribosomes in eukaryotes are made up of 60S as a large subunit and 40S as a small subunit.
• The large subunit, the 60s is made up of 28S rRNA, 5.8S rRNA, 5S rRNA, and approximately 45 proteins.
• Whereas the small subunit, the 40s is comprised of 18S rRNA and approximately 30 proteins.
• RNA polymerase gets attached to the smaller subunit of RNA during translation.
  So, the correct answer is option B.