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BIO NMDCAT Ribonucleic acid (RNA)
nmdcat.online July 3, 2026

67. The feature that distinguishes the prokaryotic RNA polymerase from eukaryotic RNA polymerases is that the prokaryotic enzyme

A. Requires a separate primer to initiate transcription
B. Utilizes a single core enzyme complex with different sigma factors
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C. Transcribes only ribosomal RNA molecules
D. Contains a dedicated subunit for adding poly-A tails

📝 Explanation

Prokaryotes handle all transcription with a single multi-subunit core RNA polymerase that relies on changeable sigma factors for promoter recognition.

📖 Additional Information

  • Requires a separate primer to initiate transcription
  • Utilizes a single core enzyme complex with different sigma factors
  • Transcribes only ribosomal RNA molecules
  • Contains a dedicated subunit for adding poly-A tails

Prokaryotes handle all transcription with a single multi-subunit core RNA polymerase that relies on changeable sigma factors for promoter recognition.

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