RNA Polymerases in Eukaryotes — NEET Biology
✅ Asked in NEET 2024Given below are two statements: Statement I: In eukaryotes, there are three RNA polymerases in the nucleus in addition to the RNA polymerase found in the organelle. Statement II: All the three RNA polymerases in the eukaryotic nucleus have different roles.
Given below are two statements: Statement I: In eukaryotes, there are three RNA polymerases in the nucleus in addition to the RNA polymerase found in the organelle. Statement II: All the three RNA polymerases in the eukaryotic nucleus have different roles.
Answer & NCERT explanation
Correct answer: C — Both Statement I and Statement II are correct
Both statements are correct. Eukaryotes have three nuclear RNA polymerases (RNA Pol I, II, III) plus RNA polymerases in organelles (chloroplasts and mitochondria). Each nuclear RNA polymerase has different roles: Pol I transcribes rRNA, Pol II transcribes mRNA and most non-coding RNAs, Pol III transcribes tRNA and other small RNAs. This is standard eukaryotic transcription machinery.
Read more NCERT concept on the PYQ
In eukaryotes, there are two additional complexities – (i) There are at least three RNA polymerases in the nucleus (in addition to the RNA polymerase found in the organelles). There is a clear cut division of labour. The RNA polymerase I transcribes rRNAs
NTA tests students' knowledge that eukaryotes have three nuclear RNA polymerases (I, II, III) plus organellar polymerases, each with specific roles—RNA polymerase I transcribes rRNA. Students commonly confuse which polymerase transcribes which RNA type, or forget that prokaryotes have only one RNA polymerase while eukaryotes have multiple. The key trap: mixing up that RNA Pol I makes rRNA, Pol II makes mRNA and most snRNAs, and Pol III makes tRNA and 5S rRNA. Remember: the three nuclear polymerases show division of labor in eukaryotes, making gene expression more complex and regulatory than in prokaryotes.
What does NCERT say about eukaryotes there are two?
Has this concept appeared in NEET?
Which chapter is this from?
Through deep analysis of NEET and NTA, 176 of the 180 ReNEET 2026 (June 21) questions were already in the MedicNEET question bank before the exam.
176/180MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.