Pre-rRNA Processing and Synthesis Quiz

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Questions and Answers

What is the function of RNA polymerase I in pre-rRNA processing?

  • Synthesizing pre-rRNA (correct)
  • Cleaving pre-rRNA
  • Trimming pre-rRNA
  • Synthesizing hnRNA

Which organelle is responsible for pre-rRNA processing?

  • Golgi apparatus
  • Mitochondria
  • Endoplasmic reticulum
  • Nucleus (correct)

What is the role of small nucleolar RNAs (snoRNA) in pre-rRNA processing?

  • Cleaving pre-rRNA
  • Synthesizing pre-rRNA
  • Trimming pre-rRNA
  • Carrying out base and sugar modifications (correct)

What is the primary RNA transcript synthesized by RNA polymerase II?

<p>hnRNA (B)</p> Signup and view all the answers

What is the purpose of 5' capping in hnRNA processing?

<p>To protect the RNA from degradation (D)</p> Signup and view all the answers

What is the purpose of splicing in hnRNA processing?

<p>To remove introns (C)</p> Signup and view all the answers

What are the three rRNAs generated from pre-rRNA processing?

<p>28S, 18S, and 5.8S (A)</p> Signup and view all the answers

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